I've bought an iPhone 4 and the text and calling work fine, as does wifi. However, when trying to use internet without Wifi I get a "Could not activate cellular data network - PDP authentication failure".
How can I fix this?
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Sign up to join this communityI've bought an iPhone 4 and the text and calling work fine, as does wifi. However, when trying to use internet without Wifi I get a "Could not activate cellular data network - PDP authentication failure".
How can I fix this?
There have been a lot of different attempts to fix this general error in different ways. Some of these may work for you.
Remove the SIM card from iPhone 3G, turn off the phone, reboot, then reinsert the sim card and wait an hour or two.
Go to Settings -> General -> Reset -> Reset Network Settings on your phone to reset the network setting on the iPhone.
Change SIM Card
if nothing else works, call AT&T and have them reset your number.
I just got this problem fixed for Argentina calling t-mobile tech support. They were great.
Calling worked. SMS worked. Data - did not work. APN Authentication Failure
Tried before this - airplane mode - cell settings reset - power cycle (turn off/on) phone - hard reset - network setting reset - several APN profiles (only useful if you change to local SIM card)
The data roaming ON was set on my phone, but that wasn't working on movistar service. They had me dial a special code to turn that on on the network for my line.
#766#
And it turned data roaming on and instantly - data was back on.
You might also try going into Settings > Carrier and choosing manual carrier selection - bizarrely enough, that worked for me. See https://apple.stackexchange.com/a/52624/12164
Try to hard -reset the whole phone using the power and the home button.
Airplane mode off/on,then off,,manual search network ,enable network by a tik sign, date time ,year most up-to-date, get sim card loaded off,switch off 10minutes,put the SIM card ,switch on phone.its done on iPhone 4. Or try the settings sent OTH (over the air) by network operators directly to your phone for a GPRS/edge data transfer protocol connectivity. Such problems occur when you get a hardware change which do not carry the same apple part number and do not authenticate . Sometimes you may try using a logic card from another i phone 4/4s phone to try rectify the same issue. Such was the case when a touch/display screen was replaced with another available in the gray market.
Bro just call your Internet service provider. They will help you with it. I had same problem but after found that my validity of Sim was over and I need to recharge. Call your carrier and just talk to them.
You may try download and install APN configuration file and install again. This solution worked for me
holding both buttons (power and home buttons) at the same time seemed to work for me :)
in most cases this error occores due to insufficient credit in you mobile connection. please pay your bill to the service provider and try again. it should work.