Trying to use cellular data sim is invalid use different sim why

i tried using my 3g but when i check my cellulat data account it says the sim card is invalid use another sim......
dont understand why????

This troubleshooting guide helped me. Had to try up to step 7...
iPhone: Troubleshooting a cellular data connection

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If you allow an app to use cellular data will it ever use WiFi?

In the USE CELLULAR DATA FOR settings, you can authorize cell data for individual apps and services. What I would hope is that when you are at home and operating on a WiFi network with cellular services turned off, that that would override these settings. Does it actually work that way?

That setting is system-wide, not tied to a specific app. iOS priorizes Wi-Fi over Cellular if available, so you don't normally have to turn off Cellular data.
Unless you're at work, the Net Admins have draconian restrictions on LAN traffic and can't wait to get home and download the ****, in which case going Cellular gives you a workaround, so you turn off Wi-Fi instead...

Apps missing from use cellular data list in iphone 6

So I got the new iPhone 6...and half of my apps are missing from the "use cellular data" list...those that are missing won't load when I try to open them...they just flash and shut down. I've tried turning off wifi...I've tried resetting the phone...nothing works. What's the point of the phone if you can't use the freaking apps when you aren't connected to wifi?? Anyone else having this problem?? Anyone know how to fix it??

Hi there Kalypsokel,
You may find the troubleshooting steps in the article below helpful.
iOS: An app you installed unexpectedly quits, stops responding, or won’t open
-Griff W.

After enabling cellular data, i am receiving mails even if disable "use cellular data for mail", due to this data usage usage use is more, if we have fix please let me know

Phone Model and OS
Model - iphone 5
IOS 8.0.2
Problem Description
After enabling cellular data, i am receiving mails even if we disable "use cellular data for mail", due to this data usage usage use is more, if we have fix please let me know.
Steps:
1. Enable Cellular Data
2. Disable mail on "use cellular data for mail
3. check whether mail is received or not
tried multiple times and i am getting more billing amount because of data usage

Mail isn't the only app using data. Turning it off there has no effect whatsoever on whether the rest of iOS or other apps you have installed. In fact most apps use data these days, at a minimum for Notifications and often for gameplay and other features.

Iphone 5 - "use cellular data for" option only shows Facetime and Passbook

I have an iphone 5 and I am trying to manage my cellular data usage,
When I go into Settings - Cellular and I look at the "use cellular data for" option, there are only 2 apps on the list Facetime and Passbook.
I have seen other posts online that show a long list of apps that you can toggle Cellular data on and off.
How can I see a longer list of apps.

In Settings/General/Restrictions if you tap on Cellular Data Use there should be 2 options: Allow Changes or Don't Allow Changes. If you don't see these options is that where you see "Cellular data is turned off for 'Setting'?
Do you have a corporate MS Exchange email account on your phone? If so your administrator may have added an override on this setting.

Why my apps can't be disable on USE CELLULAR DATA FOR under Cellular settings

I came across an issue that my apps tend to stay on ( enable ) even when I disabled it manually, it will turn back on soon after, this can cause certain people data overage and extra data cost they did not expect. I always check my settings daily because I play with my phone numerous times a day so I noticed any changes or differences. So after I had done probably most people have tried, reset/restart the phone, check any latest OS updates, double check any settings, reset network settings, turn off and on data, turn on and off airplane mode, the conclusion is nothing. So I thought maybe i should try one app that I know kept turning back on when I disabled it, did the updates on the appstore, went back to the settings and I was able to turn on and off, tried the second app just to make sure my assumption works, updated the newest version on appstore, it works. So I decided to update all of the apps, then the problem is FIXED ! I hope this solve people's issue. Now I am able to manually disable and enable any app under USE CELLULAR DATA FOR,It was lucky guess for me and it work.

Did you try to reset the phone by holding the sleep and home button for about 10sec, until the Appel logo comes back again? You will not lose data by resetting.
If this does not work, did you try to switch off Cellular Data, restart the phone and switch it back on again?

Use Cellular Data

What is the meaning of "Use Cellular Data" in Settings > Music (iOS 5.1 and iTunes Match)? I tried to switch off this option, but I was still able able to download a song from iCloud using Cellular Data.

I enabled iTunes Mach on my iPhone, however the "Settings > Music > Use Cellular Data > Off" described here:
http://support.apple.com/kb/HT4913
However it does not work as expected, and data continues to download iTunes Match data over 3G.
This unfortunately meant that last weekend I exceeded my mobile data quota by over 2GB when my phone continued downloading the entire day in the background. This issue has cost me $AUD499 in excess data usage charges, for something I explicitly looked for a setting to prevent!

HT5848 i'm hooked up to a wifi network but i cannot access itunes radio without using cellular data, why?

I'm trying to use the new iTunes radio but it keeps telling me "Network Unavailable, Connect to Wi-Fi network or use cellular data". Problem is, I am hooked up to a Wi-Fi network. I went to settings--> Wi-Fi--> and it is one and connected. How can I get iTunes radio to recognze this?
Thank you

After I did a hard reset I was able to see the radio. Now, a few moments later, the radio has dissapeared from my music all together. I just turned my phone off and back on again in hopes that it would reappear but it did not. I then tried to do another hard reboot butthat did not work either. I have lost it altogether.

Why would the settings app use cellular data

when i go into settings and can choose what apps use cellular data, 'settings' is a choice and in fact has used 99.4 kb of data. anyone know why? thanks.

trying one more time to get an answer for this.

"use cellular data for" apps keep turning back on

ie. go in, slide bar from green to off for facetime, youtube, etc...go out of Cellular, back in, and those apps show green for "use cellular data for".
At first I thought it was an issue with some versions of Angry Birds, as they don't all do this. Then realized facetime, youtube, facebook, etc.. all do this.
Works fine on two other iphones. Running latest ios on 4S
The fact it doesn't do it for all apps is what I find is strange. Thought at first it was an issue with Rovio apps, but then realized even facetime does this.
Thanks

I'd like to know why there is not solution to this. I think I'll just remove all those apps that are turning their 'use cellular' data back on. I only cared because when my kid plays angry birds, my cellular data was being used for videos. Oh well, I guess I'll have to remove apps or get a new data plan.
<Edited by Host>

I bought new i phone 5 3 days back, after that asked for new update which is 6.1.4, after updating my iphone i am not able to use cellular data services. I called up data provider, they says its the problem with new software update. There is no option add

I bought new i phone 5 3 days back, after that asked for new update which is 6.1.4, after updating my iphone i am not able to use cellular data services. I called up data provider, they says its the problem with new software update. There is no option add APN. Now when i switch to safari its showing you are not subscribed for cellular data. But I am able to use data on other phone.
Will you please help me in this regard?
Another issue, since i bought my new iphone there is dust inside back main camera.
Your advises are highly appreciated.

Hey Shaiju isac,
I'd take a look at the following article, it'll guide you though steps to you troubleshoot cellular data issues on your iPhone:
iPhone: Troubleshooting a cellular data connection
http://support.apple.com/kb/ts3780
Cheers,
David

I have an iPhone 4s, and I reset the content and setting. It turned on, I chose English, Australia, and now, I am unable to connect/activate my iPhone through Wi-Fi, and for an unknown reason, it will not allow me to use cellular data or iTunes.

I have an iPhone 4s, and I reset the content and setting. It turned on, I chose English, Australia, and now, I am unable to connect/activate my iPhone through Wi-Fi, and for an unknown reason, it will not allow me to use cellular data or iTunes. I'm not sure of what to do. It's quite frustrating, and all I need is advice, and help. I would much appreciate it. Thank-you.

In order to download to your phone over the air, you need to be connected to WiFi.
It's possible the Internet connection through Verizon is not stable enough for the downlaod to begin (it is a very large download).
You might want to head over to Starbucks with your laptop for the afternoon and see if you can download it over their WiFi.

"Use cellular data for" is only showing a few apps

Hello,
I just got a new 5S. I have installed and used maybe 15 or so apps, but when I go to
Settings -> Cellular -> "Use cellular data for"
it only shows 5 apps: Calendar, FaceTime, Find iPhone, Passbook, & Skype.
I would like to see all the apps so that I can control what is using cellular data. When I read other posts online, it seems like this should show all apps. Does anybody have any idea why I only see a few apps here or what I can do to display all apps?
Thanks for any help!

This troubleshooting guide helped me. Had to try up to step 7...
iPhone: Troubleshooting a cellular data connection

"Use Cellular Data For" is always on. I cant off this...

I am continuosly using the iPhone. Suddenly i cant restrict few applications from internet in the "Use Cellular Data For". But I cant access few app which has On flag in "Use Cellular Data For". If i disable this, its getting enabling after few seconds,. I reset everything. Nothing works
Thanks,
Jude

This troubleshooting guide helped me. Had to try up to step 7...
iPhone: Troubleshooting a cellular data connection

On iPhone 5c iOS 8.2, I go to settings, cellular, use cellular data for: Under "use cell data for are my apps but they are greyed out how can I ungrey them??

iOS 8.2 on iPhone 5c, goto settings, cellular, use cellular data for: all my apps under "use cellular data for" are greyed out. I've restart and hard reset. Looked thru all settings. Can someone help??

Did you try to reset the phone by holding the sleep and home button for about 10sec, until the Appel logo comes back again? You will not lose data by resetting.
If this does not work, did you try to switch off Cellular Data, restart the phone and switch it back on again?

HT1688 iPhone 5S, Settings Cellular Use Cellular Data For Apps - Not Updating

I have iPhone 5S iOS 7.0.4 with AT&T Contractual Plan.
When I change any settings in Settings > Cellular > Use Cellular Data For to disable or enable apps to use cellular data. And, if I exit and enter again it shows the old settings.
Also Call Time > Current Period is not updating.
This is happening for last one week. I have also noticed heavy cellular data usage for last one week.
I have reset the phone as a new phone this it is solved, but if I restore from my backup, then the problem is returning again. Even I have deleted some apps, but it doesnot help.
Please help me to solve this.

Call AT&T - it seems they are forcing their own settings on you.

Trying to use cellular data sim is invalid use different sim why

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