Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

23 posts


# 43587 21-Oct-2009 15:56
Send private message

Have an iPhone 3GS on XT. Over the weekend I updated it to 3.1.2 and re-jailbroke it using black rain. Since I have updated it, when I go on safari or check my email using 3g, its comes up with "Could not activate cellular data network" about 60% of the time. If I turn the phone on and off it starts working again, or if I leave it a while, it will start working again. Just after I updated it to the new software and before I jailbroke it, it was doing the same thing so im pretty sure it doesn't have anything to do with the jailbreak.

Any Idea's and is anyone else having ther same problem?


Create new topic
9 posts

Wannabe Geek

  # 265747 21-Oct-2009 18:30
Send private message

I'm having the same problem. I also have a 3GS on XT running the latest firmware and my phone isn't jailbroken. I've had the iPhone for about 1.5 months and have had this problem since day one but not very often. Ever since yesterday it's been doing it 60%-70% of the time with the same warning message coming up. Like you if I turn off and on it will work or give it 30 seconds or so and it works again.

I've tried resetting the network settings: settings>general>reset>reset network settings. but this hasn't helped.

Anyone have any more idea as this is highly frustrating!


edit: Forgot to mention I'm on XT prepaid and have a data bundle which has plenty of data left for the month.

75 posts

Master Geek

  # 265753 21-Oct-2009 19:08
Send private message

I don't know whether it was related or not but I had issues on XT over the weekend with my LG CU515....had to search for ages to find the network, when it was found came up with 'not registered for network' or something similar. Came right on sunday night and has been fine since.


9 posts

Wannabe Geek

  # 265879 21-Oct-2009 23:29
Send private message

As an update...went out tonight and tried for about 10 mins with no luck to get 3g data going. Same message everytime. Gave up for about 5 minutes then tried again. In this time mail did an update (using imap and gmail, with push on) so things came right while my iPhone was in my pocket. But upon trying again I once again had no data. When I got home a turned off the wifi option and for a number of hours no problems with mobile data. Turned wifi back on and went out of my range and once again no problems with mobile data. Don't know if this means anything though. Will see how things go tomorrow.

1 post

Wannabe Geek

  # 266132 22-Oct-2009 15:54
Send private message

I've been experiencing the same problem, but only since updating to 3.1.2. I'm also on the XT network.
I need tethering back too, so will be downgrading to 3.0.1 over the weekend and will update this thread if the situation improves.

9 posts

Wannabe Geek

  # 266270 23-Oct-2009 03:06
Send private message

Went out tonight and tried for about 20 minutes but no cell data at all. Then decided to change my APN to ever since doing that I've had cell data working for about 3 hours with no problems. Anyone know of any reason not to just leave it with the above APN if it's working?

16 posts


  # 266294 23-Oct-2009 09:29
Send private message

Thankyou so much for that tip about using

I had exactly the same problem this morning - data not working at all despite a good signal etc - and changing to has completely fixed it.

Does anyone know what has happened ? I have been using with my 3gs for a couple of months with no problems, but for the last few days I have been intermittently getting the "Could not activate cellular data network" problem, followed today by over 30 minutes of no data at all.

2385 posts

Uber Geek


  # 266302 23-Oct-2009 09:51
Send private message

You can actually tether with 3.1.2 now as long as you are evil and have jailbroken.. there are lots of instructions on the net on how to do it.



9 posts

Wannabe Geek

  # 266549 24-Oct-2009 12:57
Send private message

Interesting update. I changed my apn back to last night and things worked no problem. Out and about now and things are once again no problem. Will give it time and see what happens.

Create new topic

Twitter and LinkedIn »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Amazon Studios announces New Zealand as location for its upcoming series based on The Lord of the Rings
Posted 18-Sep-2019 17:24

The Warehouse chooses Elasticsearch service
Posted 18-Sep-2019 13:55

Voyager upgrades core network to 100Gbit
Posted 18-Sep-2019 13:52

Streaming service Acorn TV launches in New Zealand with selection with British shows
Posted 18-Sep-2019 08:55 announces partnership with smartphone manufacturer HTC
Posted 16-Sep-2019 21:30

Finalists Announced for Microsoft NZ Partner Awards
Posted 16-Sep-2019 19:37

OPPO Showcases New CameraX Capabilities at Google Developer Days China 2019
Posted 15-Sep-2019 12:42

New Zealand PC Market returns to growth
Posted 15-Sep-2019 12:24

Home sensor charity director speaks about the preventable death which drives her to push for healthy homes
Posted 11-Sep-2019 08:46

Te ao Maori Minecraft world set to inspire Kiwi students
Posted 11-Sep-2019 08:43

Research reveals The Power of Games in New Zealand
Posted 11-Sep-2019 08:40

Ring Door View Cam now available in New Zealand
Posted 11-Sep-2019 08:38

Vodafone NZ to create X Squad
Posted 10-Sep-2019 10:25

Huawei nova 5T to be available 20th September
Posted 5-Sep-2019 11:55 launches prepay challenger brand Kogan Mobile in New Zealand
Posted 3-Sep-2019 11:42

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.