Could not activate mobile data

pdp authentication failure appears when I click on safari. how can i make the internet work? and I have full internet with tmobile so it not a network fault.

Ensure you have the correct Tmobile settings http://support.t-mobile.co.uk/help-and-support/index?page=content&id=FA993&actp= search&viewlocale=en_GB
Then carry out a Reset - hold home and power buttons together until the phone switches off and let go whent the Apple logo appears. Then try.

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Since upgrading my iPhone 5 to ios 7, I cannot get the internet, email to work on 3g. I get the message ""could not activate mobile data network. You are not subscribed to a mobile data service". How do I fix it?

Since upgrading my iPhone 5 to ios 7, I cannot get the internet, email to work on 3g. I get the message ""could not activate mobile data network. You are not subscribed to a mobile data service". How do I fix it?
I've contacted o2, tried all of their suggested updates and changes, reset my phone 3 times and still no luck.
Any help appreciated.
Thanks,
Louisa

Hi, l have the same problem, were you able to resolve?

I bought an unlocked 3G and when I try to use the internet, it says 'Could not activate mobile data network'.

Hi all,
I have recently acquired an iPhone 3G 16GB. It is unlocked and I have put my sim card in (Virgin Mobile) and used it without problem when calling or sending text messages. The internet all works fine when connected to a wi-fi network.
In the top left hand corner it says '3G', however if I try anything related to the internet (Safari, Twitter etc.) a message will appear reading 'Could not activate mobile data network'. This is very inconvenient for me. All internet related activities work fine when connected to a wi-fi network.
Is this a problem with all unlocked phones? Is there a solution to this? Or am I simply unable to use the internet without wi-fi on this model?
Any help would be greatly appreciated, all questions may sound silly, but this is my first iPhone and I am very inexperienced with them!
Thanks

First, you don't have a 3G if you have iOS 6.1.4. The 3G cannot go higher than iOS 4.2.1. That is not related to your problem, but worth knowing.
Let's try the obvious first. Tap the Settings icon. Then tap General. Then Cellular. Is Cellular Data on? Is there an entry for APN? If there is contact your carrier and ask what the APN settings should be. If there is no entry don't worry; the APN is automatic with your carrier.

My iphone4 says its cinnected to 3g but when i use safari it says "could not activate mobile data network". Any ideas please?

my iphone4 says its cinnected to 3g but when i use safari it says "could not activate mobile data network". Any ideas please?

Further, if you are not in your home cellular carrier's area, you need to set Settings > General > Cellular > Data Roaming = "On".

Could not activate mobile data network - iPhone 3GS

Hi, I really need some help please.
Last week I started to get this message everytime I tried to use internet services, email, web or apps. I was on 4.1.2 and the phone was officially unlocked and running a T-Mobile sim with auto-update carrier file installed.
I reset the phone, restored it and never worked, subsequently, I have done this many times, reset network settings, hard reset, soft reset and I eventually upgraded to 4.2.1. This still never solved the issue.
After countless restores and resets and iTunes updating the carrier files, nothing is working. I contacted T-Mobile who said there are no connectivity issues, must be the handset. I then contacted Apple who advised the handset is out of warranty and an 'out of warranty' repair will cost minimum £146.
The phone works fine calling, messages and on Wi-Fi it's only internet services that do not work. Is there anything else I can try or has anybody experienced the same problems?

Thanks for the advice. That was one thing I hadn't tried purely becuase it is such a pain in the ***. I reset the phone and set it up as a new one and bingo, it worked fine. I then went to restor from backup, after which, same issue, Could not activate mobile data network, so another reset and now I'm pretty furious that all my phone contacts, apps and messages have all gone.
Next question would be how to transfer phone contacts from phone to sim. I have lost all new numbers that have gone into the phone for the last year, so if I reset again, restore from backup, transfer numbers to sim, then reset again and set up as new phone I should be able to recover numbers at least.
<Edited by Host>

Could not activate cellulare data network??? what is the solution please.

everytime i try to log to the internet through the internet service provider on the phone, i get this message (could not activate cellulare data network)
I was loginig before via wifi meanwhile i do not have wifi and i am forced to use the service provider internet.
What should I do , I tried the soft, hard reset as well as the restart with no sucsses.
any advice???

I had the same issue "Cannot Activate Cellular Data Network" sometimes says "No Internet..or You are not subscribed to a Data Network". The phone works fine on WiFi.
I noticed this issue only yesterday when tried to access my emails via 3G Data, this may have started happening when I recently updated to 4.3.2 and my phone has never been Jailbroken.
I found a fix that worked for me..I'm using T-Mobile Germany.
Go to Settings>General>Reset>Reset Network Settings>enter Pin code if you have lock enabled>choose Reset Network Settings..
Remember doing this may also erase known WiFi networks, so you may have to enter the details again to get connected to a known WiFi network.
My 3G data started to work again after I did the above steps to default factory network settings.
T-Mobile Germany wasn't much help at all. All they could tell me was some crap about my config was in the wrong contract, Duh??
They probably did nothing to fix the issue and I suspect the above resets steps resolved it for me. Give it a try..
Cheers!!

Could not activate cellular data network on iphone 3g

my phone's screen broke yesterday so i bought an iphone 3g from a frend of mine, its running on 4.0.1, i am already on at&t an have an existing data plan but when i try to use the internet i keep gettng this message "could not activate cellular data network" what do i need to do to fix this?

I am absolutely getting LTE. From the iPhone 5S on, the GSM and CDMA phones had identical GSM radios ostensibly for overseas use (in the case of the Verizon phones). Verizon tells you they're only unlocked for overseas so that you won't leave their service for a domestic GSM. Actually, all of the 6's have identical receivers, however the CDMA antennae are disabled on the T-Mobile and AT&T versions... which doesn't matter anyway because Verizon and Sprint won't activate devices that did not originate on their networks though theoretically you could run on Verizon LTE with a GSM only phone as GSM is required for LTE (thus the SIM card in later model Verizon phones).
The Verizon model is the best of everything because it is completely unlocked for any carrier (except Sprint, but who cares, right?).
Edit: forgot to mention... Verizon is required to make all of their LTE phones GSM-unlocked as per their agreement with the FCC when they were acquiring LTE technology.

Could not activate cellular data network message

I am on Vodafone UK and mostly have my phone on 2G mode. I get good EDGE coverage 5 bars but I am intermittently getting "Could not activate cellular data network" message. The settings are correct, as it sometimes works, 3G data is fine over the same APN. A Blackberry connected via EDGE seems to work fine.
Vodafone insist its not an issue with the Network, as I work for a contractor with them I also had the radio side of things checked and all seems ok. Now it could be a core network issue, SGSN or similar, or its bug in the iPhone firmware. I never had this issue prior to iOS4.
Anyone else, specifically having any problems with EDGE/GPRS? I would be interested to know.

I had this problem at 1st with t-mobile 3g
connect it to itunes and it will say carrier update click accept on itunes that sorted it for me

Could not activate cellular data network on iphone 6 plus

I was using an att's prepaid gophone and just bought an iphone 6 plus yesterday. but it shows that "could not activate cellular data network" even if "at&t 4g" logo shows on the top of the screen.
I've asked att for help and they said that my sim card and account are totally correct. When I put other's SIM card in my iphone and put my SIM card in an 5s, both of two iphone worked well. but when my sim card in my iphone, the cellular wouldn't work.
att said that iphone 6 plus which is a very new device may not support prepaid card yet, but i'm not sure if it is the point.
did anyone meet the same problem? i've tried the old solution about clear the cookie and data but it didn't work.
hope for your helps

I am absolutely getting LTE. From the iPhone 5S on, the GSM and CDMA phones had identical GSM radios ostensibly for overseas use (in the case of the Verizon phones). Verizon tells you they're only unlocked for overseas so that you won't leave their service for a domestic GSM. Actually, all of the 6's have identical receivers, however the CDMA antennae are disabled on the T-Mobile and AT&T versions... which doesn't matter anyway because Verizon and Sprint won't activate devices that did not originate on their networks though theoretically you could run on Verizon LTE with a GSM only phone as GSM is required for LTE (thus the SIM card in later model Verizon phones).
The Verizon model is the best of everything because it is completely unlocked for any carrier (except Sprint, but who cares, right?).
Edit: forgot to mention... Verizon is required to make all of their LTE phones GSM-unlocked as per their agreement with the FCC when they were acquiring LTE technology.

"Could not activate cellular data network" message on iPhone 3GS (iOS 4.1)

May this year I purchased a brand new iPhone 3GS 16GB from Vodafone on a 24mnth plan with 2gb of data monthly for mobile and tether use. The 3G and normal gsm data alwyas worked in areas where it was avalible until 3 months ago. In safari i would get a message stating that "Could not activate cellular data network" and in all apps no internet serivces worked unless wifi was activated.
I put my sim in my n95 and my 5800 and internet worked on both. I got my number put onto a new sim card. I restored iPhone. I updated iPhone to 4.1 and reset all network settings.
Nothing worked and apple came to the conclusion that it was a faulty handset and replaced it on saturday. Today when I woke up, the same message appeared!!!!
Please anyone help
Message was edited by: r.spiroski

I am having similar problems.
My network settings are correct and I can communicate both over 3G and WiFi.
However, every few minutes the connection is being dropped. A few seconds later it's back again. I can see this in an application I am developing. It's rather frustrating...
In the console I see this message prior to the connection being lost and rebuilt:
"Mon Sep 20 09:44:58 PeterVs-iPhone-3GS configd[23] <Notice>: network configuration changed."
I have not changed anything to the configuration. What's even more strange is that I ONLY have 3G at this moment, i.e. WiFi is disabled.
What is changing the network configuration? And why does it mean that the current network connection needs to be torn down and rebuilt? After the network is back, there is no difference than before. So it gets torn down and rebuilt for no apparent reason.
I have logged a bug with Apple over a week ago, but haven't had any reply from them yet. I need more information about what is happening, and how I can prevent it. I'm not very happy having to grope in the dark, having to make guesses because somebody decided that he knows what's best for me.
This is happening on multiple iPhones with multiple different OS-es. So I am guessing it is related to my carrier (Vodafone). But I can't verify it because I'm not getting the tools from Apple.

Could not activate cellular data in iPad

Could not activate cellular data in iPad

I found that mobile data stopped working on my iPad once upgraded to IOS 5.1. I have resolved the problem by re-applying the settings in Settings > Cellular Data > APN Settings which had (very bizarrely) been over-written as a result of the upgrade process.
Clearly your APN settings will be specific to your data plan, but if you contact your contract provider, they should be able to tell you what they are.
Hope this helps.

Could not activate celullar data network

I have just got this problem today, there's a 3G sign and the provider's name but everytime I tried to browse internet using safari or open email the blue box with message "could not activate celullar data network" always pops up, now I can not connect to internet.
I'm using the new ipad 3 64GB with WiFi + celullar and os 5.1.1
Please help, i've tried to restart this device but still the error message pops up.
Thanks before hand.

Some of this talk is beyond my knowledge base, but I do have a pretty good basic understanding of how to troubleshoot. My problem is I have exactly the same error message "Could not activate cellular data network".
I have done all the troubleshooting I could think of (Airplane mode, toggle cellular settings, Reset Cellular Data Settings), and finally contacted my service provider, T-Mobile. The tech had me verify my APN settings, which were as they should be. He said they can see my phone is on "a" network, but they can't see what network (because I am in Canada with the phone, and it is using an affiliate network, just like it has been for the past 6 months... I winter in AZ and summer in Canada).
The phone worked flawlessly for the past 6 months, roaming in Canada on my Arizona T-Mobile account until yesterday, when suddenly I could no longer get any internet services. The indicator in the menu bar has 5 bars of my nearest cellular provider (SaskTel's) 3G service, that is why T-Mobile help desk could see it was "on line" but had no explanation as to why I could not connect.
He tried a couple of things, which did nothing, then suggested I backup and do an erase and restore of my iPhone, which I did.
It still acts the very same way as before. This thread Could not activate cellular data network, suggests that maybe something in the backup is corrupt, so I erased it all again, and this time set it up as a new phone, not from the backup.
That did not help either - I am still getting 5 bars of SaskTel 3G in the indicator in the menu bar, but the internet apps say I have no connection to the internet. Just like before.
Any other thoughts or suggestions? I am not due back into AZ for another month and he suggested if the erase and restore did not fix it, it might be hardware related, but I don't want to be an entire month without internet on my phone... (we do not have T-Mobile in Canada).
Much obliged.

HT4623 My new iPad can no longer connect to the 3G network. I keep getting the message "could not activate cellular date network".

I updated my new iPad to the iOS 6 while connected to wifi. However, it will no longer connect to the 3G network. I keep getting the message "could not activate cellular data network" even though the 3G symbol appears normal. I have tried rebooting, but it still doesn't work. Please help!

No. You can't

How to solve the error message "Could not activate cellular data network: PDP authentication failure"when using 3g or gPRS on safari with an iphone 4 and latest software updates

Please can someone help me to solve the error message "Could not activate cellular data network: PDP authentication failure"when using 3G or GPRS on safari with an iphone 4GS and latest software updates. I have tried resetting the network and phone settings. I have restored the factory settings on itunes and still the problem persists.

All iPhones sold in Japan are sold carrier locked and cannot be officially unlocked by the carrier. If you unlocked it, it was by unauthorized means (hacked), and support cannot be given to you in this forum.
Hacked iPhones are subject to countermeasures by Apple, particularly when updating the firmware. It is likely permanently re-locked or permanently disabled.
Message was edited by: modular747

IPHONE 5: can't receive calls & random error messages, such as "could not activate cellular data network" and "no connection - network unavailable, please connect to wifi or cellular network." This occurs even when signal strength or wifi is operational.

IPHONE 5: can't receive calls and random error messages, such as "could not activate cellular data network" and "no connection - network unavailable, please connect to wifi or cellular network." This occurs even when signal strength or wifi is operational, and it does not matter whether wifi is on or off. ATT went through the standard protocol - resetting network, resetting sim card, etc. No changes. Other phones working fine in same region with same carrier. Apple's solution is to restore software, but haven't gone there yet. Anyone successfully addressed this/these issues?

I should point out that it worked when the iPhone was set back to factory settings, but when restored with the backup, data/internet no longer works again, and I get the "Could not activate cellular data network" error message yet again.

Could not activate mobile data

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