Touchscreen sometimes unresponsive while on calls??

Sometimes, when on a call, the touch screen becomes unresponsive. Certain letters don't work, sliding the screen doesnt work. And when the call is over, the problem still exists until I turn it off and then back on. Should I just restore the phone? Would this be a hardware or software issue? Note: touchscreen works just fine the majority of the time.

I have restored the phone, it does work for a while but become unresponsive after using few times. What can I do? My iphone has been unwarranted. It works perfect during the restore and apps download, seems there are no problems for the screen. Any suggestions? Thanks.

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My iPhone 4s Touchscreen is sometimes unresponsive to receiving calls

Sometimes when a call comes through my iPhone 4s won't let me answer the call. I can't slide the 'slide to answer' switch. Pressing the home button seems to help after a few presses, but maybe that's a coincidence. Is anyone else having this problem? I had the same problem with my iPhone 3 and so I am worried it may be a software problem.

Unfortunately, there isn't anything you can do, unless you are using the computer you normally sync with. If you are, you should be able to backup without unlocking the phone.

Device's touchscreen activating while on calls

device's touchscreen activating while on calls, which has resulted in dropped calls or placing the caller on hold.

I have restored the phone, it does work for a while but become unresponsive after using few times. What can I do? My iphone has been unwarranted. It works perfect during the restore and apps download, seems there are no problems for the screen. Any suggestions? Thanks.

My touchscreen blacks out while on a call so I can't multitask. If I am on a call and a new call comes in, I can't see who is calling or even think of answering because the screen is blacked out.

My touchscreen blacks out while on a call so I can't multitask. If I am on a call and a new call comes in, I can't see who is calling or even think of answering because the screen is blacked out.

Thank you so very much! My husband is in Afghanistan and calls at different times. If I am on a call and can't answer him it could be days before I hear from him again. I never thought to just restart my phone! Duh...this is my first smartphone so I am learning. All day people were calling while I was on the phone but I couldn't answer. Thank GOD none of the calls were my husband because it would break my heart if I missed his call. Thank you again and GOD bless you! Ashley Combahee

IPhone 6 screen locked up while on call

My iPhone 6 screen locked up while I was on a call - the screen went black and all buttons/touchscreen was unresponsive. I had just upgraded to iOS 8.1 earlier this morning and placed a call. I was put on hold and wanted to hang up when I noticed my screen was black. No buttons would work, so I took it out of my case and tried again with no luck. I finally got it to shut down from holding the Home & On/Off buttons simultaneously. Anyone else have this problem?

I had a similar problem. I will be talking on the phone and next thing I know the screen is black & unresponsive. The apple logo comes up and than the call continues. I am not sure what is causing this but it has happened several times to me AND has also happened to a friend of mine.
Any feedback would be greatly appreciated.
iPhone 6, iOS 8.1

Why does Firefox on my Windows 7 PC hang (become unresponsive) while it waits for most pages to load or run scripts?

Firefox hangs (becomes unresponsive) when accessing many sites including Gmail. Eventually, when hung, Firefox will throw up a window saying "WARNING: A script has become unresponsive" or, in the case of Gmail, the page itself will say "Some Gmail features have failed to load due to an internet connectivity problem."
IE8 and Google Chrome are working normally. I've tried Firefox in safe mode, re-installing and even running Firefox portable from a USB thumb drive. Each time with the same result—Firefox hangs or becomes unresponsive while it waits for most pages to load or run scripts.
#### PC Workstation Environment ####
Firefox 13.0.1
Windows 7
Symantec Endpoint Protection 11.0.6200.754
--

Your problem sounds like the one that a co-worker and I started to have about the same time. Check your Symantec client management control log. You might see a line like the following.
Date and Time Severity Level Action Test / Production Description API Class Rule Caller Process ID Caller Process Parameter User
2012-07-30 10:48:09 AM 15 Block Production Unauthorized NT call rejected by protection driver. System Built-in rule 1608 FlashplayerPlu FuncID-B6H, R... None
At first we thought that it was a Javascript problem until we noticed this log. The key words are 'Block' and 'FlashPlayerPlu'. This problem recently started for us, perhaps with a software push 1-2 weeks ago. Internet Explorer does not hang when accessing pages with Flash.
The Flash page does eventually load after a long time. However, since the whole browser hangs for a while, for the most part having the Flash plugin enabled makes Firefox unusable if accessing pages with Flash.
Disabling the Flash plugin solves the hanging problem, but I do not know what is causing the problem, nor do I know when a combination of Windows 7, Flash, and Symantec will work. Your later version of Symantec shows that we might have the problem for a while, but I do not know what customization CSC did with Symantec. My coworker did run a complete virus scan, uncovering nothing. Another co-worker is running Windows XP. She does not have the problem, but I do not know what other versions of software she is running.
Symantec Endpoint Protection version 11.0.6100.645
Flash version 11.3.300.268
Firefox version 14.0.1
Windows 7 32-bit service pack 1

My iPhone 4 sleeps automatically even if my battery is full. It also sleeps while on call or if I use my camera.

I Don't know why my iPhone 4 keeps turning off even if the battery more than 50 percent and it won't also turn on unless I starts charging again. It also turns off while on call or try to use any apps. Please guide

Hi there tensherabb,
You may find the troubleshooting steps in the article below helpful.
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIs and corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen. Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
Issue not resolved
My issue is still not resolved. What do I do next?
Contact Apple Support.
-Griff W.

Turn off iphone power button broken and touchscreen selectively unresponsive

I have an iPhone 4S w/ iOS 7, my power button has broken so I have enabled the Accessibility features in order to lock and unlock my phone.
That has been working fine. Now, my touch screen is selectively responsive. It IS NOT broken or damaged in anyway. I can access the pull down and pull up menus, I can ask Siri to search for something and I can scroll through the responses she returns. I can visit one of those web pages she returns and scroll inside of those as well.
However, any scrolling that is related to a Home screen function I can not perform. For example, I can't "flick" away apps to close them, I can't hold down the "Lock Screen" button which then presents the "Slide to turn off" slider, the touchscreen won't slide the slider... When I do access either the pull down or pull up menus, I can see them but I cannot select anything on them, the touchscreen is unresponsive. When my phone is locked I can't swipe to unlock it.
We do not have home POTS service, so this is my only means of calling for help if I needed to, and now I can't. This is a very unfortunate failure.

Hi there quixee,
I would recommend taking a look at the troubleshooting steps found in the article below.
iPhone, iPad, iPod touch: Troubleshooting touchscreen response
http://support.apple.com/kb/ts1827
-Griff W.

My cheek/ear selects things on touch screen while taking calls. Proximity sensor problem?

Hello all
Had my X3 Compact for a couple of months now and really liking it.
APART from the fact then when I am on a call the screen still seems to be a little sensitive to touch.
I hear beeps of things being selected. Very often when I finish the call I see the screen is on Notifications or Quick Settings screen, or sometimes the Date and Time screen. Sometimes I notice that my cheek/ear has turned on Bluetooth from the Quick Settings screen.
Sometimes while on a long call (ie more time in which to involuntarily press things) the other person will suddenly not hear me anymore - no doubt due to imprecise cheek/ear selection!
Is there something wrong with the Proximity Sensor? I have tested the Sensor with the available diagnostic and it seems functional. And my peripheral vision tells me that the screen goes black as I raise the phone to my ear.
I've heard that this model can occasionally overheat, but I've never noticed/felt any dramatic peaks in temperature.
But something is clearly wrong.
As I said I have tested the Proximity Sensor.
I have not dropped or damaged my phone.
I do not use any kind of screen protector or case.
My software is up to date.
Any thoughts/ideas would be very welcome!!
(I have contracted the phone the EE in the UK - I have not contacted them yet as I thought it would be best to go straight to the manufacturers.)
Thanks very much
Jamie

Well I have been facing this issue since the first day itself and this isnt any issue at all!!
What happens is when we answer a call, out phone isnt in lock state and also we arent holding our phone constantly in one position to our ears/cheeks so theres rubbing of the screen (due to our ears/cheek) which eventually swipes down the Status bar Quick settings and then randomly turns on any feature icon our ear.cheek touches. And we keep hearing some beeps.
So what I do is once I answer a call I always make it a point/habit to manually lock the phone via Power button. This way I have found my personal solution to this problem.
And this is the only solution for this nagging issue
Also if you want, you can completely remove all icons which bother you from Quick settings so that even if your phone isnt locked while on call, nothing will get activated in the background.
So follow my steps and enjoy your Z3 without worrying about this issue.
-------- If my Post or Answer helped you out, Please KUDOS me

What do the globe and triangle with exclamation point mean on the URL bar and why do they sometimes change while surfing a page?

I have always about this, as I've seen these more than once along multiple versions of Firefox. I'm well aware that the lock means the site is 'verified' though I don't know exactly what that entails. More recently, I've noticed that many websites either have the lock or else the globe with the markings on it which says that the connection to the site in question is 'unencrypted', but I don't know what that means. Sometimes this will change between pages on the same website. What I find stranger is that sometimes a a single page on one site will go from the lock to the triangle with the exclamation point in it. Now from what I can tell, it means something similar to the globe, as they seem to both state the same basic thing, that the website doesn't supply identity information and the connection isn't encrypted. What I want to know is how and why this happens, and sometimes even while still on the same page. I've encountered this on three different versions of firefox. The 24 esr, 28.0, and version 34. (Not all on one computer, mind. Though I believe it's possible to have multiple instances of Firefox on the same machine as I know someone mentioned being able to do that on another thread and I'd love to know how that's done if anyone can answer it.) These versions of firefox were on 8.1, and two distinct versions of XP from two different machines. Is this an odd glitch, or is something else going on there and if so, how does one fix it? So far it's happened to me twice on my own computer, once on a fiction website, and as of tonight, once on youtube. On the former, the switch happened on a single page, while on Youtube it changed from one page on the search bar to the actual channel of something in question and back again. Closing out the tab and doing a quick clearing of history seemed to work fine on youtube. The fiction website, not so much, though I haven't seen the triangle thing come back again, as everything there seems to be the globe. So far anyway. However it has come up before on various computers in the past that I've used with various firefox versions, as I've said. Can anyone explain what this is and how to fix it if it is indeed a problem?

''jscher2000 [[#answer-707094|said]]''
<blockquote>
The green padlock means your connection is HTTPS (encrypted) and the certificate identifies a particular site operator. Certificate issuers demand special verification for the Extended Validation (EVSSL) certificate that generates a green padlock.
The gray padlock means your connection is HTTPS (encrypted) but the certificate cannot establish the operator of the site one way or another. No special identification is required to get this certificate.
The exclamation point triangle symbols may indicate that the connection is partially encrypted -- some content is the page was sent over an open connection -- or recently it may indicate that the site uses such easily cracked encryption that you should treat it as providing no protection.
And the point of all this is?! Simply this: if your web traffic is ''not encrypted'', it can be read by others. That's why login pages and sites dealing in your personal or sensitive information should always show a padlock in the address bar. If it's not there, be concerned.
If a normally secure site suddenly shows a mixed content icon, try reloading the page (Ctrl+r or to re-request fresh copies of cached files use Ctrl+Shift+r).
</blockquote>
As it happens, I have tried the refresh thing. It doesn't always work on sites where this sudden changeover occurs. The weird thing is that, again, this happens at random and I've seen it occur over multiple versions of firefox, past and present, so it's not just relegated to just the three main ones I have most recently seen it on.
Now what makes this even stranger is that I have seen a few pages on the fiction website (www.fimfiction.net to be specific) where the grey padlock at the very least shows up on a page, but then suddenly will go to the triangle. Not all of these pages have mixed content or even any content at all beyond simple text. A few have pictures or clickable links, but I usually avoid clicking on the links if I don't know and trust the website. More recently though, the near-entirety of the site has gone to the globe, when before it was the grey padlock. I think the one thing that remains padlocked is its login section. Is it just that the website needs to update its certificates? If so, I can probably just send the site runner a message about that.
I dunno what to do with youtube when it shows up though other than just closing out the tab it's on, clearing my browser history, and reopening the site. It happens rarely with youtube, but it's not unheard of, and it follows along every page on the site once it pops up in one page at all until I shut down that tab. And this is a multiple version thing. These are the two sites where I encounter the issue the most as it's one of only a handful of websites I go to aside from an image gallery which is typically very good about safety. Or as much as it can be, at any rate. The only other site I frequent, www.fanfiction.net (probably the oldest fiction website still active today, and not to be confused with fimfiction) has the grey padlock at all times, aside from when I log into the site. I've used the https: prefix most times when going to a site the first time, and firefox has typically then used that prefix anytime I just enter the general website address in the URL bar, but sometimes it doesn't. Is that partially responsible for why I have seen the padlock switch to the triangle sometimes? I know the link that cor-el posted says that by default from version 16 up, mixed content is blocked by default and I don't think I've ever touched that in the options section of the tools, so what exactly do I do here? Just ignore it, or just keep hitting refresh or what? It doesn't happen all the time, after all, but it does still get annoying.

So, my ipod touch is running 5.1.1 and is slow and sometimes unresponsive. According to Apple it will not update to iOS 6. It is a 32GB, 3rd Generation. I want the new features but it's making me mad. I do not want to jailbreak. HELP?!

So, my IPod touch is running 5.1.1 and is slow and sometimes unresponsive. According to Apple it will not update to iOS 6. It is a 32GB, 3rd Generation. I want the new features but it's making me mad. I do not want to jailbreak. As this would void my device from Apple. I love the features iOS 6 has to offer but I don't want to put out anymore money. IPods are expensive enough, Should I use blobs? Or would that make my device worse. Plus I do not want to pay $20.00 for a chat and have to wait all day to someone who I can't understand on the telephone. someone help me please.

For the slowness:
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.

How to access contact list while a call is going o...

Can anybody how to access contact list while a call is going on or call is on hold in Nokia E5 moblile?

Hit the menu key, to switch to the application menu, and open the Contacts app; the E5 supports multitasking just fine.

Error while using CALL METHOD

I am getting a error while using CALL METHOD cl_ssf_xsf_utilities=>get_bds_graphic_as_bmp
The error is class "CL_SSF_XSF_UTILITIES is unknown. How to correct that?? please help I am new to object oriented programming??
Edited by: priya singh on Nov 18, 2008 2:14 PM

This is my code.
REPORT ZSAVE_FUNCTION .
D A T A D E C L A R A T I O N S *
DATA: v_bitmap TYPE xstring, "graphic data
v_file TYPE string, "file name
v_length TYPE i. "length of binary file
DATA: BEGIN OF it_bitmaps OCCURS 0,
object TYPE tdobjectgr, "object
name TYPE tdobname, "name
id TYPE tdidgr, "id
tdbtype TYPE tdbtype, "graphic type
END OF it_bitmaps.
DATA: itab TYPE TABLE OF x.
*class cl_ssf_xsf_utilities definition.
public section.
methods : get_bds_graphic_as_bmp
DATA: L_GRAPHIC_XSTR TYPE XSTRING.
*method cl_ssf_xsf_utilities
S E L E C T I O N - S C R E E N *
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME.
PARAMETERS: p_object TYPE tdobjectgr, "object
p_btype TYPE tdbtype, "graphic type
p_name TYPE tdobname, "name
p_id TYPE tdidgr. "id
SELECTION-SCREEN END OF BLOCK b1.
SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME.
PARAMETERS: p_file TYPE rlgrap-filename. "file name
SELECTION-SCREEN END OF BLOCK b2.
*A T S E L E C T I O N - S C R E E N O N V A L U E - R E Q U E S T *
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_name.
*-- Creating f4 help for the parameters
PERFORM get_f4_object_name.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.
*-- Getting the current value entered
PERFORM get_current_value.
*-- Value Request Functionality For Input File Name
PERFORM f4_value_request.
S T A R T O F - S E L E C T I O N *
START-OF-SELECTION.
*--Getting the graphic as a BMP file
PERFORM get_graphic_bmp.
*--Convert the Xstring format to binary format
PERFORM convert_to_binary.
*--Download the graphic
PERFORM download_graphic.
*& Form get_current_value
Get the current file path entered
FORM get_current_value .
DATA: BEGIN OF li_dynp_value_tab OCCURS 0.
INCLUDE STRUCTURE dynpread.
DATA: END OF li_dynp_value_tab.
DATA: l_program_name LIKE d020s-prog,
l_dynpro_number LIKE d020s-dnum.
l_program_name = sy-cprog.
l_dynpro_number = sy-dynnr.
REFRESH li_dynp_value_tab.
li_dynp_value_tab-fieldname = 'P_FILE'.
APPEND li_dynp_value_tab.
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
dyname = l_program_name
dynumb = l_dynpro_number
TABLES
dynpfields = li_dynp_value_tab
EXCEPTIONS
invalid_abapworkarea = 04
invalid_dynprofield = 08
invalid_dynproname = 12
invalid_dynpronummer = 16
invalid_request = 20
no_fielddescription = 24
undefind_error = 28.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE 'S' NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
READ TABLE li_dynp_value_tab INDEX 1.
p_file = li_dynp_value_tab-fieldvalue.
ENDFORM. " get_current_value
*& Form f4_value_request
Provinding the f4 for the given path
FORM f4_value_request .
*-- if the file is to be downloaded to presentation server
CALL FUNCTION '/SAPDMC/LSM_F4_FRONTEND_FILE'
EXPORTING
pathname = p_file
CHANGING
pathfile = p_file
EXCEPTIONS
canceled_by_user = 1
system_error = 2
OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE 'S' NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDFORM. " f4_value_request
*& Form GET_GRAPHIC_BMP
Get the graphic as a BMP file
FORM get_graphic_bmp.
CALL METHOD cl_ssf_xsf_utilities=>get_bds_graphic_as_bmp
EXPORTING
p_object = p_object
p_name = p_name
p_id = p_id
p_btype = p_btype
RECEIVING
p_bmp = L_GRAPHIC_XSTR
EXCEPTIONS
not_found = 1
internal_error = 2
OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDFORM. " GET_GRAPHIC_BMP
*& Form CONVERT_TO_BINARY
Converting the xstring to binary format
FORM convert_to_binary .
CALL FUNCTION 'SCMS_XSTRING_TO_BINARY'
EXPORTING
buffer = v_bitmap
IMPORTING
output_length = v_length
TABLES
binary_tab = itab.
ENDFORM. " CONVERT_TO_BINARY
*& Form DOWNLOAD_GRAPHIC
Download the graphic
FORM download_graphic .
v_file = p_file.
CONCATENATE p_file '.BMP' INTO v_file.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
bin_filesize = v_length
filename = v_file
filetype = 'BIN'
TABLES
data_tab = itab
EXCEPTIONS
file_write_error = 1
no_batch = 2
gui_refuse_filetransfer = 3
invalid_type = 4
no_authority = 5
unknown_error = 6
header_not_allowed = 7
separator_not_allowed = 8
filesize_not_allowed = 9
header_too_long = 10
dp_error_create = 11
dp_error_send = 12
dp_error_write = 13
unknown_dp_error = 14
access_denied = 15
dp_out_of_memory = 16
disk_full = 17
dp_timeout = 18
file_not_found = 19
dataprovider_exception = 20
control_flush_error = 21
OTHERS = 22.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDFORM. " DOWNLOAD_GRAPHIC
*& Form GET_F4_OBJECT_NAME
Get F4 values for object names
FORM get_f4_object_name .
DATA: dynpfld_mapping TYPE STANDARD TABLE OF dselc WITH HEADER LINE,
return_tab TYPE STANDARD TABLE OF ddshretval WITH HEADER LINE.
*--Selecting the values to be provided as f4 help
SELECT tdobject
tdname
tdid
tdbtype
FROM stxbitmaps
INTO TABLE it_bitmaps.
*--To update the values in the remaining fields
dynpfld_mapping-fldname = 'F0001'.
dynpfld_mapping-dyfldname = 'P_OBJECT'.
APPEND dynpfld_mapping.
dynpfld_mapping-fldname = 'F0002'.
dynpfld_mapping-dyfldname = 'P_NAME'.
APPEND dynpfld_mapping.
dynpfld_mapping-fldname = 'F0003'.
dynpfld_mapping-dyfldname = 'P_ID'.
APPEND dynpfld_mapping.
dynpfld_mapping-fldname = 'F0004'.
dynpfld_mapping-dyfldname = 'P_BTYPE'.
APPEND dynpfld_mapping.
*--Providing f4 help with the selected values
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
retfield = 'TDOBNAME'
dynpprog = sy-repid
dynpnr = sy-dynnr
dynprofield = 'P_NAME'
value_org = 'S'
TABLES
value_tab = it_bitmaps
dynpfld_mapping = dynpfld_mapping
EXCEPTIONS
parameter_error = 1
no_values_found = 2
OTHERS = 3.
IF sy-subrc <> 0.
MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
ENDFORM. " GET_F4_OBJECT_NAME

10.8.2 Problem#3 - Cursor sometime disappears while zooming

Starting Info : https://discussions.apple.com/message/19932291#19932291
10.8.2 Problem#3 - Cursor sometime disappears while zooming
I'm always using Accesibilty/Zoom function and sometime while typing on Safari's textbo, cursor just gone.

See this thread. It's been reported since 2011. I haven't yet seen a solution.
https://discussions.apple.com/thread/3324908?start=0&tstart=0

After having iso7 my phone get hanged while answering/calling ?

after having iso7 my phone get hanged while answering/calling ?

Hi varinder22,
If you haven't already done so, you may want to restart or reset the iPhone:
iPhone, iPad, iPod touch: Turning off and on (restarting) and resetting
http://support.apple.com/kb/HT1430
If the above does not resolve your issue, the next best step will be to restore your iPhone using a computer with iTunes. Please be sure to backup your iPhone first.
Choosing an iOS backup method (Should I use iTunes or iCloud to back up my iOS device?)
http://support.apple.com/kb/HT5262
iTunes: Restoring iOS software
http://support.apple.com/kb/HT1414
Thanks,
Matt M.

Touchscreen sometimes unresponsive while on calls??

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