3G-Uk sim in other handsets - GSM-Forum

matab · 04-25-2004, 12:20

I was using 3G sim in e700 (roadming on o2)for a month and jus yeserday it said refreshing sim and now it wont work on the e700 says "Sim Crash" whats that mean? Also on nokia's it says "Sim Rejected" few months ago it worked on them! How is 3G-Uk updateing the sims and not allowing them to work on other handsets???
Is there anyway to remove the updates so the sim is like it was when i 1st got it(worked on almost all handsets)???

-Thanks

Silex · 05-02-2004, 07:19

I know why it happened, but unfortunately I can't help you fix the problem. But you can use this as future reference. 3 in the UK (and all 3g phones out now) use a new type of sim card card USIM. U stands for universal. Not much difference except it operates on a slightly higher voltage (this was your problem) and it ha the ability to store more contact info. Normal 2g and 2.5g phones where not meant to accept USIM cards due to the higher voltage requirements. It shouldn't even work in these phones.

nab · 05-02-2004, 18:48

Hi Silex, sagem and other hansets operate automatically on either 3v or 5v sims. what voltage do Usim use ? maybe a small mod to the circuit could allow them to work ?

Silex · 05-02-2004, 20:53

I remember it being something like 3.2V, but don't quote me on that. A google search isn't yielding much info either. I'm sure you can modify the voltage requirements of the board itsself, but keep in mind that the all the parts on the phone are built 'to spec' (including voltage) which means that it might be more involved than we think.

04-25-2004, 12:20	#1 (permalink)
matab Insane Poster Join Date: Dec 2003 Age: 39 Posts: 96 Member: 46923 Status: Offline Thanks Meter: 0	3G-Uk sim in other handsets I was using 3G sim in e700 (roadming on o2)for a month and jus yeserday it said refreshing sim and now it wont work on the e700 says "Sim Crash" whats that mean? Also on nokia's it says "Sim Rejected" few months ago it worked on them! How is 3G-Uk updateing the sims and not allowing them to work on other handsets??? Is there anyway to remove the updates so the sim is like it was when i 1st got it(worked on almost all handsets)??? -Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Burned/used uk sims in qty	flexasist	Wanted Products	3	04-16-2010 12:02
need 3g uk code in qty	GSM-FUTURE	Wanted Products	1	09-26-2008 00:27
Hutchison 3g UK SIM in Siemens C35i phone ahd/or module	worldentropy	Java, iOS, Android, Symbian development	0	07-30-2008 01:01
WTB: 3PAY UK Sim Cards which work in 2G Handsets	DannyK22	Wanted Products	0	09-06-2004 11:31
3G sim working in other mobiles??	MC Harami	Various	3	03-13-2004 05:39

05-02-2004, 07:19	#2 (permalink)
Silex Junior Member Join Date: May 2004 Age: 40 Posts: 27 Member: 64368 Status: Offline Thanks Meter: 0	I know why it happened, but unfortunately I can't help you fix the problem. But you can use this as future reference. 3 in the UK (and all 3g phones out now) use a new type of sim card card USIM. U stands for universal. Not much difference except it operates on a slightly higher voltage (this was your problem) and it ha the ability to store more contact info. Normal 2g and 2.5g phones where not meant to accept USIM cards due to the higher voltage requirements. It shouldn't even work in these phones.

05-02-2004, 18:48	#3 (permalink)
nab No Life Poster Join Date: Apr 2001 Location: UK and PAKISTAN Posts: 643 Member: 4315 Status: Offline Thanks Meter: 1	Hi Silex, sagem and other hansets operate automatically on either 3v or 5v sims. what voltage do Usim use ? maybe a small mod to the circuit could allow them to work ?

05-02-2004, 20:53	#4 (permalink)
Silex Junior Member Join Date: May 2004 Age: 40 Posts: 27 Member: 64368 Status: Offline Thanks Meter: 0	I remember it being something like 3.2V, but don't quote me on that. A google search isn't yielding much info either. I'm sure you can modify the voltage requirements of the board itsself, but keep in mind that the all the parts on the phone are built 'to spec' (including voltage) which means that it might be more involved than we think.