Slow/non-existent data connection on 3GS/iOS 4.0.1
I have been a happy 3GS user since last December. About three days ago, I synced to iTunes and installed the latest software update, to iOS v4.0.2. Since then, whenever I try to access any web page in Safari, it just sits there for a while trying to access the page before eventually coming up with a message that it was unable to access the web page "because the server stopped responding". The same happens if I try to use the data connection via another app (e.g. Facebook). I should add that everything works fine if I connect via WiFi.
I did manage to get on the web yesterday evening when I was in a city centre area with five bars of 3G signal strength, but even then it took ages to load a web page. I have always had between about two and four bars of signal strength at home, and this has always been sufficient to load web pages reasonably quickly.
I usually use the 3G data connection several times a day, and have never experienced this problem until now. I've just got off the phone with O2 technical support – they asked me first to reset network settings and then reset all settings, but neither of these made any difference. They left me with two suggestions: go to an o2 store and ask them to try my SIM card in a different handset (I don't have much faith in this working), or do a factory reset/restore via iTunes. I'm loathe to do this unless absolutely necessary, as I guess it means losing all my data and having to resync everything from scratch.
Is anyone else experiencing this problem? Any suggestions other than what the o2 guy said? Is there any way I can get back to 4.0.1, which worked fine?
Thanks in advance,
Rob
Wow, our responses are starting to get long.
robgrayson wrote:
actionmarker wrote:
It's a pity he didn't (or wouldn't) change the SIM. It probably took him longer to explain to you that he didn't need to test the SIM that it would have take to set up a new SIM and test it.
So unfortunately, you still don't know for certain that it's not a SIM issue.
I agree it's a pity. I really wanted to be eliminate this as a possible cause, but I couldn't make the guy do it.
Maybe try another store, or do it over the phone and get them to send you one out?
I did a full restore – and incidentally discovered that the backup I made before applying the 4.0.2 OS update was not available to restore – I'm guessing it may have been corrupted or something. So I've had to revert to a backup that was saved in June, which is a bit of a pain. Anyway, the restore has changed nothing in terms of connectivity – with 3 bars of 3G signal, no web page will load – I just get the spinner in the status bar at the top of the screen, and eventually a message saying that the server has stopped responding.
Did you restore to 'new' or tried to the backup? You need to try it to 'new' as this erases all previous settings.
I restored it to the backup. I guess I need to restore it to new – which is a pain because it means I then have to manually reset any settings for mail accounts, etc.
You need the restore to 'new' so you have a clean phone, test in internet connection with nothing added and see what happens.
Personally I don't particularly like the way iTunes backs up. It's probably fine when this are all good, but when testing or trying to fix issues, I find it a bit limited.
All the Backups on your Mac go to this location;
/Users/[username]/Library/Application Support/MobileSync/Backup/
The issue I have with it is that in the backup folder, some of the files are overwritten each time that a backup occurs, making only the last backup available for restoring.
Yes, I find that pretty annoying to. I've just lost two months' worth of text message history because of it.
My work around for this is to copy the complete backup folder then in the copied folder I open the Info.plist file with TextEdit and edit the Device Name string by adding the date. When you then open iTunes and try to restore from backup, multiple backups are displayed.
You said you copy the entire folder before editing the Info.plist file. I presume you put the copied folder in the same location as the original?
In the backup folder, there is a folder with a big long alphanumeric name. Make a duplicate of this and leave it in the backup folder, so there is the original folder and copy of original folder. then edit the info file in the duplicate.
Once done, open itunes without the phone connected and go to iTunes > Preferences > devices and you should see your extra backup appear in the list there.
When you edit the info file change the following line:
+<key>Display Name</key>+
+ <string>[robgrayson]’s iPhone 20100511</string>+
I add a date at the end of the line. This line is then displayed in iTunes as the name of the backup
I also set iTunes to not automatically sync when the iphone is connected. This give the control back to me of when and how often I backup.
Yes, I changed this setting yesterday too.
Do you use Time Machine to back up your Mac? If so, you could restore the backup location on your Mac to before you did the restore and bring back you most recent backup that way.
Yes, I do use TM – I've been using it for a couple of years but have never actually had to restore anything. Just to be clear, I suppose you mean restore the backup folder from before I did the iOS upgrade, and then restore my phone from that?
How about this: if I do a restore from new first and see if that makes any improvement, do I then have an option of applying a dated backup (or would I have to go through the whole restore process again in order to do so)?
Yes, Navigate to the backup folder location, open time machine and restore to yesterday or when ever the last back was.
Duplicate the backup as above as a precaution.
Check iTunes recognises it. (make sure iTunes is closed when you are adjusting the backup files.
Restore to 'new' and check the phone. If it all is OK and working, its probably something in the backup and you don't want it back on your phone, and you will have to manually restore everything.
So unfortunately, you don't seem to be any closer to resolving the issue. Let us know if you want any more help, or alternately how you go with Apple.
I may try restoring from a previous backup via Time Machine, as you suggested. (This should also give me back my lost text messages.) There are also rumours that iOS 4.1 will be released today, so I may give that a try first.
Thanks once again for your very helpful suggestions.
If I were you, I would try to get the phone working before you worry about 4.1
Message was edited by: actionmarker
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at $Proxy16.addDeployment(Unknown Source)
atweblogic.management.internal.DynamicMBeanImpl.unprotectedUpdateDeployments(D
ynamicMBeanImpl.java:1784)
atweblogic.management.internal.DynamicMBeanImpl.access$0(DynamicMBeanImpl.java
:1737)
atweblogic.management.internal.DynamicMBeanImpl$1.run(DynamicMBeanImpl.java:17
15)
atweblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManage
r.java:780)
atweblogic.management.internal.DynamicMBeanImpl.updateDeployments(DynamicMBean
Impl.java:1711)
atweblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBeanImpl.
java:1035)
atweblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Configurati
onMBeanImpl.java:353)
atcom.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.java:135
8)
atcom.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.java:133
3)
atweblogic.management.internal.RemoteMBeanServerImpl.setAttribute(RemoteMBeanS
erverImpl.java:898)
atweblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:324)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:193)
at $Proxy13.setTargets(Unknown Source)
at java.lang.reflect.Method.invoke(Native Method)
atweblogic.management.console.info.FilteredMBeanAttribute.doSet(FilteredMBeanA
ttribute.java:92)
atweblogic.management.console.actions.mbean.DoEditMBeanAction.perform(DoEditMB
eanAction.java:145)
atweblogic.management.console.actions.internal.ActionServlet.doAction(ActionSe
rvlet.java:171)
atweblogic.management.console.actions.internal.ActionServlet.doPost(ActionServ
let.java:85)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
atweblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Servle
tStubImpl.java:1058)
atweblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:401)
atweblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:306)
atweblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(W
ebAppServletContext.java:5445)
atweblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManage
r.java:780)
atweblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
ntext.java:3105)
atweblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
:2588)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)
Why does it say:
can't be created with non-existent Pool
Thanks, -
Restoring a deleted column in Excel from a SharePoint Data Connection view
I used the "Export to Spreadsheet" option for a SharePoint document library to create my working report. I created a special view for this as I did not want all of the columns in my export. I build my report on a seperate tab in Excel
around this exported data and it has been working great. I recently added a new column to the view on SharePoint but it does not show up when I refresh my data. I tried manually adding the column, evening ensuring it was in the same orderl;
still no luck. The Connection file does not exist so I cannot edit the owssvr.iqy. All I have is the connection string and command text. I created a new workbook to see if the command string changed because of the new column but it did not.
I don't want to rebuild my report from scratch just because I added a new column, but it appears that may be the only option I have unless someone can answer my question.
Question: How can I get a new column from a view added to an existing data connection query?Hi,
First, make sure you have added the new column into the view as well as the list.
Second, try to use "MSQuery" feature in Excel to check the issue.
For more information about MSQuery, please refer to the following link:
http://office.microsoft.com/en-us/excel-help/use-microsoft-query-to-retrieve-external-data-HA010099664.aspx
Jaynet Zhang
TechNet Community Support -
Entity Framework - unable to select the oracle data connection
Entity Framework - unable to select the oracle data connection from the wizard that allows you to select the data provider. Even though we successfully added a data connection that points to an oracle database, we still can't select an existing data connection or create a new database provider that points to an oracle instance.
we are using both vs 2008 sp1 and vs 2010. We connect to oracle 11g and we use the latest oracle odp.net driver. the Driver is installed and working in vs studio.I had this exact problem when I started. I think I had downloaded the wrong odbc (the 64x version). When I unloaded that version and downloaded the 32bit version it worked.
Hope that helps. ~ Darla -
I have a problem synching calendar data between my iPhone 3GS iOS 5.1 & Outlook 2007 on MS7. The basic calendar data transfer is OK but the birthdays (little box icon) are a day early & cannot be changed to the correct date. The birthday entries in my Outlook contacts have correct dates.How can I fix this?
The following peocess corrects the calendar entry:
edit the contact & change the birthday, save the change; edit the contact & change the birthday to the correct value, save the change again. The calendar entry then displays on the correct date. Alternatively as a temp solution I can just de-select the "birthdays" calendar which stops the icon being displayed.
Thanks for your advice, I think that it's n going to be a slow process to fix all the entries for not much return. -
Creating a Socket to non-existent host very slow
Why does it take a long time to try to create a Socket to a non-existent host on a Linux machine? On a Windows machine it takes approx. 20 sec., but when I try it on a Linux machine it takes approx. 180 sec.!
Here's the code I'm using (very simple):
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
public class SocketCreator {
public static void
main(String[] args) {
long _begin = System.currentTimeMillis();
try {
new Socket("10.10.10.10", 2000);
} catch (UnknownHostException exception) {
exception.printStackTrace();
} catch (IOException exception) {
exception.printStackTrace();
long _end = System.currentTimeMillis();
System.out.println("It took: " + (_end - _begin) + " ms.");
Some additional info:
- Java2 SDK 1.1.x, 1.3.x and 1.4.x
- Windows XP
- Red Hat 7.2, 9This is really a Linux system-wide problem. If you wanted to fix this in Java, you might even have to resort to JNI to sent yourself a signal and interrupt your system call (the system call is connect()).
Unfortunately, the page give by "man tcp" on Linux is often not kept up-to-date with the many options available in /proc/sys/net/ipv4 .
Also, access to the local LAN will often give a quick "No route to host" message.
To test the long-timeout, you have to access a remote IP that does not exist. For instance, on Linux, if you start two xterms, and on the firxt you enter:
telnet 66.120.89.14
and on that second your enter
netstat -an
You will see something like this line:
tcp 0 1 192.168.5.18:32836 66.120.89.14:23 SYN_SENT
So now you know that the socket is sitting in SYN_SENT.
Now, if you look on a nice, full man page of tcp, like
http://www.die.net/doc/linux/man/man7/tcp.7.html
You will see
tcp_syn_retries
The maximum number of times initial SYNs for an active TCP connection attempt will be retransmitted. This value should not be higher than 255. The default value is 5, which corresponds to approximately 180 seconds.
Back on the second xterm, try:
% cat /proc/sys/net/ipv4/tcp_syn_retries
5
I bet you got five also. You could turn it down to two (decreases time to around 20 seconds).
You could try this as root:
# sysctl -w net.ipv4.tcp_syn_retries=2
or even add this command to your /etc/rc.d/rc.local file -
ok my iphone 3g touch screen is not responding, i can recieve calls and it can charge and connect to itunes, but i cannot go any further than using the home button or the power button, it is only the slide feature and touch feature that has become non existent. Also, i have a f'ew cracks in my screen for a while now and it was running smoothly up until saturday when i sat on it applying large amounts of pressure to the phone screen. Is there a way i can fix this myself without having to recover my phone to factory settings or wasting 50 bucks to get it fixed??
Hi Dire Dawa,
If the screen on your iPhone isn't responding, you may find the following article helpful:
iOS: Not responding or does not turn on
http://support.apple.com/kb/ts3281
Regards,
- Brenden -
Very slow or non-existent broadband in the evening...
Why is it that when you contact BT about a slow or non-existent BT broadband every evening, they doggedly maintain that testing the line and waiting seven days will solve the problem? My BT broadband works wonderfully well during the daytime but slows to a standstill in the evening, not really a line problem, rather a bit of exchange congestion I think, unless of course you believe in conspiracies.
What if BT are actually setting the lines that have the old white HomeHub and Internet phone to a lower priority than the Infinity lines, to boost the performance of the new connections and encourage, (force), the current HomeHub users to upgrade? I rather like having two telephone lines, and would rather not upgrade and lose the second line, but I feel that this is not what BT want.
So if I'm forced to upgrade and lose the Internet phone it's off to Sky, those Murdochs need all the help they can get.
Solved!
Go to Solution.Hi evm001 & Ropy
I am really sorry that you have had problems getting this sorted out. I'll be happy to get involved and make sure we get your service fixed if you can give us one more chance?
Could you drop me in an email please? Use the 'contact us' form in my forum profile under the 'about me' section. You can find it by clicking on my username.
Thx
Craig
BTCare Community Mod
If we have asked you to email us with your details, please make sure you are logged in to the forum, otherwise you will not be able to see our ‘Contact Us’ link within our profiles.
We are sorry but we are unable to deal with service/account queries via the private message(PM) function so please don't PM your account info, we need to deal with this via our email account :-)”
td-p/30">Ratings star on the left-hand side of the post.
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