IPhone :: IP 3GS / Upgrading To IOS4 / Loses Cellular Data Connectivity
Jul 7, 2010
Ever since I upgraded to iOS4.0, my iphone 3GS has been losing its internet connection over 3G.The 3G indicator remains lit on the display, however when trying to surf or use an app that requires internet, it simply times out. In order to get my internet back I need to reboot the phone, or switch airplane mode on, then off.It seems to occur after I leave the house, so it may be that the phone is having trouble automatically switching from Wifi to 3G.Does anyone have any suggestions on how to fix the issue?
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Jun 12, 2012
I am having an awful time loosing cellular data - can't send or receive text messages, use Safari or Find my Friends etc. I came into the forums looking for help and found posts about the personal hotspot constantly spinning. I looked at mine and it was too. I did a hard reset and it finally stopped. Immediately I got connectivity back. I don't know if that is causing my loosing internet or not but it seems coincidence that when it stopped spinning I got it back.Simply going into and out of airplane mode and toggling cellular data on and off never restores connectivity. Often it will restore when I leave the building. But I have 3-4 bars of signal and 4G listed as available when I'm inside.Also, something is chewing up my battery. I was at 100% when I left the house at 8 am and at 65% at 10 am with the phone sitting on the desk doing nothing.
Info:
iPhone 4S, iOS 5.1.1
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Jun 12, 2010
I upgraded my 3G to iOS 4 and jailbroke it the other day. Everything works fine except data — whenever I try using the internet over 3G, nothing happens. Every app I try is unable to connect to the web. Calls and SMS still work fine.Is there a way to either
a) revert to 3.1.2, or
b) get data working on iOS 4?
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Sep 5, 2014
my iphone 4 loses network frequently after upgrading to ios 7.1.2 how to fix it?
Info:
iPhone 4 (8GB), iOS 7.1.2
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Dec 9, 2011
Proud owner of a Photon for a few days now. For the most part, aside from some minor glitches, I LOVE this phone so far. It's great. However I have one big problem.At work I have a decent 4G signal at my desk. My prior Evo got 1-2 (out of 3) bars and stayed connected all day with zero problems. My Photon connects to 4G just fine, but if I don't keep sending traffic over the network to the point where the 4G goes into what I assume is power save mode -- where the icon shows ZZZ instead of signal strength -- it will often lose connection in a silent way.What I mean is that I can then attempt to use apps, etc and the 4G will not transfer data, but still thinks it's connected. I'm not sure yet whether or not it stays in ZZZ mode or if the icon shows signal strength again, but I know for sure apps do not transfer data. For example when I listen to music, ScrobbleDroid starts queueing messages instead of sending them, etc. Also, GMail and IMAP push stop working, so I stop receiving email notifications. That is a BIG problem for me.
The problem goes away immediately if I either shut off 4G, or toggle 4G (turn it off then on right away). However, it will happen again quite soon after 4G goes back into ZZZ mode.This is a stock, non-rooted phone.System version: 45.3.6.MB855.Sprint.en.USAndroid version: 2.3.4aseband version: N_01.28.07RWebtop version: WT-1.2.0-160Kernel version: 2.6.32.9 dnt648@fl36bld222Build number: 4.5.1A-1_SUN-198_6ERI version: 6PRL version: 51083
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Feb 11, 2013
Several times/day now my droid razr HD loses all connectivity. No wifi, no 3g/4g/1x anything. All the indicators are grey and I can't connect to anything. Usually what I have to do is go into airplane mode and then back out and then things are back. I can't say for sure but I thought there was a time or two where I had to do a power cycle to get things back. Not positive about that. I've only had the phone for a few weeks, and I'm pretty sure it's always done this.
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Aug 2, 2011
I believe that there is a problem with the Atrix network stack. When operating at home (Lapdock or HD dock or stand-alone) I prefer to use the local WiFi connection (because the cellular signal is useless for data here on the _9th_floor_ (thanks T-Mobile UK).
However:
1/ On its own the Atrix does not properly switch to _use_ WiFi- it tries to use either WiFi or GPRS/3G/HSPA from time to time. This does not work well (read the reviews that say that the Lapdock is slow and I think that this is the problem being reported);
2/ I installed Juicedefender which is free and which switches OFF the GPRS/3G/HSPA radio when WiFi is being used:
BUT - then I notice that the WiFi data stream stops after about 90s and only re-starts after either several minutes have elapsed _or_ I switch off and on again the WiFi radio. VERY POOR. Worse, on checking with my router, the ATRIX remains _connected_ to the WiFi network at all times - so this is the internal software losing contact with the active network interface.
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Jul 20, 2010
The only thing I _really_ wanted in iOS4 was multitasking but that's a no-go for the 3G. Are there any other things in the new OS to make it worth my while upgrading?
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Jun 28, 2010
I'm a Windows 7 user... would you recommend using Redsnow to upgrade my 3GS 3.12 to iOS4 or would you suggest I wait until I can get my hands on a custom firmware and use PwnageTool? I think PwnageTool is how I upgraded my FW the last time. I just can't remember where I got my custom ipsw and I'm not sure how to find one for 4.0.
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Jul 12, 2010
i'm helping a friend upgrade her 3.1.2 3GS phone to iOS4 and i'm just trying to find out as much info as possible before i begin. she's currently running on T-mobile so her phone is def. unlocked but i don't see cydia installed. i'm wondering if her phone was factory unlocked, she received it in taiwan as a gift. if it is factory unlocked, does doing a straight upgrade to ios4 end up locking her phone, or should i use the same pwnage custom build i used for my att 3GS to upgrade to ios4?
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Jul 16, 2010
After completing an update to IOS4, the iPhone is now locked. Whenever I try to connect with iTunes, it says that SIM cards is not supported... What I can only see on the screen is the USB cable that shows it should be connected to iTunes.
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Sep 2, 2010
I was also had the green circle problem in take photo at the iphone4.If the ios4.0.2 after upgrading to ios4.1 , will not have this problem occur?
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Sep 4, 2010
I have the UNLOCKED iPhone and the following are the facts:
Model: 3Gs
iBoot-359.3.2
Jailbroken: Blackra1n
Firmware: 3.1.2
I wish to ask - can I upgrade to IOS 4.0.2 using iTunes officially and have my phone work normal? I am not so interested in pushing in Cydia apps and free apps but I want the phone to work normally.If this is not the solution, then can you recommend, how it can be done?I tried using Jailbreakme.com from my Safari on my iPhone but it simply kept restarting my phone.
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May 4, 2012
AT&T and iPhone data use charges - WiFi and cellular link options Many people have complained about unusual data usage charges on their AT&T iPhone bills -- often 10s of megabytes in one transaction, posted in the middle of the night. Here are a couple of updates based on the AT&T support portal: WiFi vs cellular link: Connecting to a local WiFi hotspot and turning off your cellular data connection will block cellular data transmission and related charges. (Except for SMS messages, which are very small.) There are some gotchas, however: (a) If your iPhone goes 'to sleep' (the screen goes black), it will revert to the cellular data link, unless it is plugged into a charger. (b) Even if your iPhone is plugged into a charger, it will revert to a cellular data connection if the WiFi link drops, e.g. due to a momentary glitch with your internet provider or electric power supply, so.... (c) The only way to completely ensure that your iPhone will not revert to a cellular data connection is to turn it completely off. You (obviously) will not be able to receive calls, however.
Large data transactions in the middle of the night: Unusually large 'chunks' of data that are apparently sent around midnight are a related issue. You may think that you could avoid these mystery charges by making sure you have a WiFi connection running at night. A number of 'czars' on AT&T's site stated, however, that this is are simply an artifact of AT&T's billing system, which "aggregates" transactions that occur throughout the day into one summary charge, which is posted in the middle of the night. If this is accurate, the data connection(s) you use throughout the day will determine how large this 'summary' transaction will be.
Note: Our bill does not appear to square with AT&T's explanation. For example:
39 04/06/2012 09:36PM phone Data Transfer 7 KB 0.0040 04/06/2012 10:35PM phone Data Transfer 7 KB 0.0041 04/06/2012 10:41PM phone Data Transfer 369,759 KB 30.00
If all of the data from 6 April was 'rolled up' into the massive 369.8 megabyte transaction at 10:41pm, why are there two small transactions at 9:36pm and 10:35? We installed Onavo to try to get to the bottom of this;; I will post the results at the end of the current billing cycle.
Info:
iPhone 4S, iOS 5, iPhone and AT&T unusual data usage
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Aug 29, 2014
I Cannot send pictures or receive them via iMessage cella data ,data roaming and 3G all switched on
Info:
iPhone 4S
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Jun 20, 2010
I bought an iPhone 3GS off a guy on craigslist and it works great, no complaints. But every few minutes or so I get the alert saying that I "Cannot activate cellular data network - You are not subscribed to a cellular data service", and it's really annoying because it lights up my iPhone all the time and kills my battery. It's also really annoying - it comes up whenever I'm typing a message or playing a game; literally when I do ANYTHING on my phone. I do not have a data plan, but I have used 'unlockit.co.nz' to install a Fake APN to my iPhone to block data. Rogers has also given me a data block. This has been going on ever since I bought the phone, I thought installing a Fake APN would stop it but I guess not. I can't really restore since I have a lot of stuff on this iPhone already.. but if that's the only option then I will be forced to. I used to have an unlocked Fido 3G (about 2 months ago) without data and it never gave me this alert, do you think it has something to do with my 3GS being locked to Rogers?
This phone is a jailbroken iPhone 3GS (model MC143C) running version 3.1.3 (7E18) and locked to the "Rogers 5.0" network. If it helps the modem firmware is 05.12.01.if there are no real solutions, I still have 2 months left on my warranty. Would Apple fix it or give me a new one if I un-jailbreak it?
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Jun 5, 2012
Still struggling to get to grips with my new iPhone 4S....Reading the User Guide it says "to turn Cellular Data off go to Settings/General/Network then turn Cellular Data off".The only problem with my phone is that "Cellular Data" does not appear in the Network screen. However "Mobile Data" does.is it the the same thing?For cost reasons I would like to be in control of when I use the internet and already I have inadvertantly incurred charges without being aware that I had gone on to the internet.Will selecting "Mobile Data" to "OFF" solve my problem.
Info:
iPhone 3GS, iOS 4
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Sep 5, 2010
what does this mean? i just got my iPhone 4 today and i was on the road (apple store is an hour drive from where i live) and i was texing my friends, had:
celluar data: OFF
enable 3g: OFF
data roaming: OFF
and i kept getting this response "turn on cellular data or use Wi-FI to access data" anyone know how to fix this? am i suppose to leave Cellular data on? i turned it off because i thought it would be wasting data. (got 200MB plan)
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May 7, 2012
How do i change my iphone 3GS from mobile data to cellular data
Info:
iPhone 3GS, iOS 5.0.1
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May 12, 2012
what difference between cellular data and mobile data in 4S?
Info:
iPhone 4S, iOS 5.1
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Mar 24, 2012
After upgrading to ios 5.1 on my 4s wifi drops and 3g network suddenly drops and shows edge connectivity
Info:
iPhone 4S, iOS 5.1
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Jul 16, 2010
If you hold a Bold, Eris, etc they don't LOSE ALL DATA connectivity like the iPhone 4 does.It is a design flaw and all the smoke and mirrors is total ********.
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Aug 24, 2010
So I got my first ever iPhone and it's the iPhone 4. I have the 200mb plan and I plan to switch cellular data off most of the time if wifi is available to avoid overage. Thing is, with cellular data off, I can't do certain things (ex. Receive picture messages via the Messages app) unless I turn on cellular data. So as long as wifi is available, will my phone still use up cellular data even though it can get data off the wifi? Thanks.
I apologize if I failed to look up any threads on a similar subject. I did a quck search but they weren't really what I was looking for.
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Jun 21, 2010
For an instant link on how to fix this issue and preserve your information click the following link:
URL...
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Mar 29, 2012
when i turned OFF the cellular data network, i can't receive/sent message/make a calls...i do same on my iP4 before,but it doesn't have any problem like this..
Info:
HP G42, iOS 4, Intel x64
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Apr 21, 2012
My partner is in the US for the week. She has turned off Cellular Data in Settings → General → Network to avoid exorbitant data costs yet when I reply to her SMS messages my messages are sent as iMessages, which she can't now receive. She's also turned off iMessage in Settings → Messages but so far my messages still default to iMessages instead of SMS. She's having this problem with other people as well, no doubt because their iPhones keep trying to send her iMesssages.
I know that I can turn of iMessage on my phone and that lets me successfully send her SMSs but I wonder if there's something she can do at her end to make SMS the default for everyone who is trying to reply to her. I've also tried Settings → General → Reset Network Settings but it hasn't solved the problem.
Info:
iPhone 4S, iOS 5.1
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Apr 25, 2012
How can I get cellular data network on 3gs phone?
Info:
iPhone 3GS, iOS 4.2
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May 12, 2012
my iPhone 4 has been lost/stolen and the phone is still ringing, but i always turn my cellular data off, is there any way to turn it back on without touching my iPhone so i can use 'findiphone'
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Sep 8, 2014
I have an iPhone 4 on 7.1.2. Ever since the beginning of this week, my cellular data was going off & on, until someday, it won't turn back on.
I turn on my Cellular Data, but there's no 3G status icon nor can I connect to anything. There's no error messages also.
I'm still under my data limit. I also did everything in this: iPhone: Troubleshooting a cellular data connection.
Info:
iPhone 4, iOS 7.1.2
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Jun 3, 2014
In settings, what apps should be "turned on" for celluar data usage?
Info:
iPhone 5, iOS 7.1.1
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Jun 24, 2010
I have AT&T and my data has not been working since I upgraded to iOS 4 yesterday. MMS, Internet, etc doesn't work. I have called AT&T and they don't know why and can't offer any solution. Anyone else having this problem?
I have tried restoring my phone, resetting the network settings, and AT&T tried unregistering and re-registering my phone but still no data.
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