Unlocked iPhone Sim problems

CyberDave

I have managed to jailbreak and unlock an iPhone I bought recently. After I had unlocked it I installed the Sim card I want to use and it worked fine on Vodafone. That was yesterday. However, all day today I have had 'No Service' in the top left corner. I have tried inserting an O2 card and then reinserting the vodafone card, now it tells me 'Invalid Sim'. Anybody know what the problem might be? Thanks.

Columba Rad

Had this problem too today, I fixed it by turning off the pin lock.

godskitchen

There are pages of info on the dev team blog, from the people who made yellowsn0w, have a look there.

CyberDave

Columba Rad wrote: »

Had this problem too today, I fixed it by turning off the pin lock.

This doesn't work for me anyway.

Eoin Macollamh

CyberDave wrote: »

This doesn't work for me anyway.

Are you using Yellowsn0w 0.9.6?

CyberDave

Eoin Macollamh wrote: »

Are you using Yellowsn0w 0.9.6?

Yes, yellowsn0w 0.9.6. Seem to have found the answer. Turn on airplane mode and then turn off the phone. When you turn it back on, it will regain service in the top left corner.

CyberDave

I have searched everywhere for an answer and tried all of the suggested solutions I have found on Google but cannot solve the problem. I have had to restore my iPhone and rejailbreak it. Now when install yellowsn0w 0.9.8 and insert my vodafone card I just keep getting the 'Invalid Sim' message. The Sim isn't locked. What am I doing wrong? I have tried reinstalling yellowsn0w a few times to no avail.

666bxg

You haven't upgraded the firmware to 2.2.1 by any chance?

If you haven't then DO NOT!!

Stream

666bxg wrote: »

You haven't upgraded the firmware to 2.2.1 by any chance?

If you haven't then DO NOT!!

I'm going to buy a new iphone in the next few weeks that I will need to unlock. Is there any chance the iphone will come with firmware 2.2.1?

On the basis that it doesn't, is there anything else I need to look out for when first unlocking a brand new iphone?

666bxg

Stream wrote: »

I'm going to buy a new iphone in the next few weeks that I will need to unlock. Is there any chance the iphone will come with firmware 2.2.1?

On the basis that it doesn't, is there anything else I need to look out for when first unlocking a brand new iphone?

Yes there is a real chance the newer iPhones will ship with the latest firmware, no real way of telling unfortunately from outside the box.

I'd keep an eye on the forums regarding this. Also keep checking the iPhone dev team for an unlock for 2.2.1

good luck

THEFRIDGE

are you getting this error. See attached

lau1247

sorry for thread jacking..

I'm gonna buy an iphone tomorrow.. but i still have concerns..

O2 stated on their website, attempt to unlock it may render the phone unusable (Something along the line of that, you get the idea)

Did that happen to anyone?? or is it just something minor like missing some features specifical for O2

THEFRIDGE

lau1247 wrote: »

sorry for thread jacking..

I'm gonna buy an iphone tomorrow.. but i still have concerns..

O2 stated on their website, attempt to unlock it may render the phone unusable (Something along the line of that, you get the idea)

Did that happen to anyone?? or is it just something minor like missing some features specifical for O2

There is a very small chance you can brick the phone but this is unlikely these guys writing the unlock software know what they are at.

lau1247

THEFRIDGE wrote: »

There is a very small chance you can brick the phone but this is unlikely these guys writing the unlock software know what they are at.

true.. they are really good at it from what i've read..
still it's hard to believe that it could potentially be bricked

rainshowers82

As your using a different sim you need to re activate the handset through Itunes like you did in the initial activation of the .. this should work for you:D