iPhone 2G on T-Mobile -- Anybody experiencing SMS loss?

[Razor1973]

I am using a freshly jailbroken and unlocked iPhone 2G on 2.2 with my T-Mobile account. However, I have been having a lot of trouble with text messages, namely people not receiving half of the ones I send. I seem to be receiving all, but my friends can't say the same.

If I go to Settings > General > Network > Cellular Data Network, these are my settings:

APN = epc.tmobile.com
Username = <blank>
Password = <blank>

Has anybody else experienced these problems? And if you aren't, are your settings the same as mine?

Thank you.

P.S. I also have a T-Mobile G1, so my data plan is the unlimited all G1 plan, in case that makes a difference.

 

[mkrishnan]

I don't know that I've had an issue with SMS's not being delivered. FWIW, though, SMS traffic is not "data" in the sense that it uses neither the APN nor the data services plan. The SMS is not transferred over the EDGE or GPRS networks -- it's transferred during an interrupt in the GSM network. So what data plan you have and what your APN settings are should be totally irrelevant to SMS functionality. In fact you need neither to make SMS work.

Do you have spotty coverage generally? And might it be worth trying to do a clean installation of the iPhone firmware again -- that is, Pwn a new copy of 2.2.1 and install it as a new iPhone without restoring an iTunes backup, at least to test and see if the problem goes away?

And just to confirm... no such problem when SMS are sent from the G1?

 

[Razor1973]

Coverage is not exactly spotty, but the signal does drop to 1 bar in some areas sometimes.

If 2.2.1 jailbreak is already pwnd, I will try what you recommend soon.

Right, no problems sending from the G1.

Thanks!

 

[mkrishnan]

Apparently QuickPwn is considered completely safe at this time on the EDGE iPhone...

http://blog.iphone-dev.org/

(FWIW, doing a clean install of the Apple official firmware 2.x will not lock an EDGE iPhone anyway -- I'm not even sure how you can return it to a locked state? I should probably also add that mine is not Jailbreaked anymore. It was initially jailbreaked and unlocked on 1.1.4, and then it was jailbreaked and unlocked on 2.0.1, but since then I have just used the official firmware without bothering to re-jailbreak it).

 

[Razor1973]

...since then I have just used the official firmware without bothering to re-jailbreak it.

It's so much easier now!

 

[trajen]

I've had this same problem! Quite a few of my friends have told me they never receive texts from me when I have been texting them frequently.

So, I can just update my iPhone to official 2.2.1 without using Pwnagetool and it will remain unlocked??

Please let me know.

 

[mkrishnan]

So, I can just update my iPhone to official 2.2.1 without using Pwnagetool and it will remain unlocked??

If it is an EDGE iPhone and it has been unlocked with any version of the firmware 2.0 or later, yes, you can. It will remain unlocked but it will not remain jailbreaked (i.e. you will not be able to install jailbreak apps unless / until you jailbreaked it again).

 

[trajen]

If it is an EDGE iPhone and it has been unlocked with any version of the firmware 2.0 or later, yes, you can. It will remain unlocked but it will not remain jailbreaked (i.e. you will not be able to install jailbreak apps unless / until you jailbreaked it again).

THANK YOU, so much!

 

[mkrishnan]

THANK YOU, so much!

Yeah, it simplifies things a lot. As I understand it, it's the baseband update that causes the phone to get locked again. Apple continues to deploy baseband updates with firmware for the 3G but not the EDGE iPhone (since 2.0). There's no guarantee that this won't change and a future update won't re-lock the EDGE iPhone, but so far, for all the versions from 2.0 to present (2.2.1) the phone remains unlocked.

 

[Razor1973]

I've had this same problem! Quite a few of my friends have told me they never receive texts from me when I have been texting them frequently.

Hey, did you ever [re-]install 2.2.1? Jailbroken or not? Is the problem gone?

As a follow-up, I want to add I installed jailbroken 2.2.1 to start fresh and see if that solved the problem. It didn't. Half of the SMS's I send from the iPhone still aren't received, whereas everything I send from my G1 seems to reach its recipient. This is the one reason I have been having no choice but to use the G1 more than the the iPhone.