T Mobile Sim Problems

iMeMyself · 14-01-2007, 21:51

My son has a Sony Ericsson K750i on the Virgin network. We find that we have real trouble getting a signal in our house and have got some free sim cards from various other network provideres to see if we can get better reception with them.

Today my son put a T Mobile sim card in his phone but he found that the signal was just as bad so he took it out and inserted an O2 card but the screen on the phone read 'Insert correct sim'.

We were on the understanding that once his phone was unlocked from Virgin he could put any sim in.

Does anyone know what has happened here and how we can get the O2 card to work.

SPARKIE1984 · 14-01-2007, 21:54

am i right in assuming that virgin uses the t-mobile network? maybe thats why only that one works??

may be wrong though.....
sparky

iMeMyself · 14-01-2007, 22:13

Yeah, you're right but we actually got the phone unlocked by Virgin which should allow us to use ANY sim card.

SPARKIE1984 · 14-01-2007, 22:27

oh right, maybe speak to virgin again then? did any other sims work?

sparky

iMeMyself · 14-01-2007, 22:31

I don;t think he tried anymore - think he got a bit worried in case he'd broke it.

prking · 15-01-2007, 08:10

This sounds like the security settings on the phone. The phone can be set to allow only a certain SIM or number of SIMs to be used.
This is so that if someone steals your phone they can't use their SIM.
Its easy to change this in the security settings.

BrightSparks · 21-01-2007, 11:21

Quote:

Originally Posted by iMeMyself

Yeah, you're right but we actually got the phone unlocked by Virgin which should allow us to use ANY sim card.

Virgin would not unlock the phone to any network!!
Its your backstreet shops that would unlock ya phone to any network or if the phone was bought as sim free i.e you buy the phone at a higher cost then its up to you to choose what ever network ya want,
The reason network providers have it locked to there network is cost they subsidize the price of the handset which then ties you to there network and hence get the money back through ya bill or top-up.
also virgin do use the tmobile network

Jac Naylor · 21-01-2007, 11:57

I don't understand how Virgin can unlock the phone - with Sony Ericsson phones they HAVE to be unlocked via a cable connected to a computer, you can't just enter a code like Nokia mobiles.

The phone is still locked. As Virgin uses the T-Mobile network, both these SIMs will work fine. To use another other network you'll need to get the phone unlocked at the market or in an independant phone shop.

If you have been charged by Virgin to have the phone "unlocked", get your money back.

bluechang · 28-01-2007, 19:39

i was told yesterday by a virgin mobile representative that a t mobile sim will not work without the handset being network unlocked

prking · 29-01-2007, 18:07

Quote:

Originally Posted by Jac Naylor

I don't understand how Virgin can unlock the phone - with Sony Ericsson phones they HAVE to be unlocked via a cable connected to a computer, you can't just enter a code like Nokia mobiles.

The phone is still locked. As Virgin uses the T-Mobile network, both these SIMs will work fine. To use another other network you'll need to get the phone unlocked at the market or in an independant phone shop.

If you have been charged by Virgin to have the phone "unlocked", get your money back.

Virgin is a virtual network, however you can still lock a phone to Virgin and a T-mobile sim won't work in that case.
The OP doesn't say that they entered a code so I don't know where you got that from.
(Incidentally, I think you are wrong about needing a cable unlock)

Ethereal. · 29-01-2007, 18:55

Quote:

Originally Posted by prking

Virgin is a virtual network, however you can still lock a phone to Virgin and a T-mobile sim won't work in that case.
The OP doesn't say that they entered a code so I don't know where you got that from.
(Incidentally, I think you are wrong about needing a cable unlock)

Jac is right you do need a cable to unlock a Sony Ericsson.

BrightSparks · 30-01-2007, 11:14

yup its a box of tricks and a cable ya need, my m8 has a phone shop and he paid £300 for the box and software for all the new SE phones that are out cos they are very hard to unlock and flash.....(ones like the k800 ect)

14-01-2007, 21:51	#1
iMeMyself Forum Member Join Date: Jan 2006 Location: North East England Posts: 303	T Mobile Sim Problems My son has a Sony Ericsson K750i on the Virgin network. We find that we have real trouble getting a signal in our house and have got some free sim cards from various other network provideres to see if we can get better reception with them. Today my son put a T Mobile sim card in his phone but he found that the signal was just as bad so he took it out and inserted an O2 card but the screen on the phone read 'Insert correct sim'. We were on the understanding that once his phone was unlocked from Virgin he could put any sim in. Does anyone know what has happened here and how we can get the O2 card to work.

14-01-2007, 21:54	#2
SPARKIE1984 Forum Member Join Date: Apr 2006 Location: amish paradise Posts: 1,919	am i right in assuming that virgin uses the t-mobile network? maybe thats why only that one works?? may be wrong though..... sparky

14-01-2007, 22:13	#3
iMeMyself Forum Member Join Date: Jan 2006 Location: North East England Posts: 303	Yeah, you're right but we actually got the phone unlocked by Virgin which should allow us to use ANY sim card.

14-01-2007, 22:27	#4
SPARKIE1984 Forum Member Join Date: Apr 2006 Location: amish paradise Posts: 1,919	oh right, maybe speak to virgin again then? did any other sims work? sparky

14-01-2007, 22:31	#5
iMeMyself Forum Member Join Date: Jan 2006 Location: North East England Posts: 303	I don;t think he tried anymore - think he got a bit worried in case he'd broke it.

15-01-2007, 08:10	#6
prking Forum Member Join Date: Sep 2002 Location: Weston-super-Mare Posts: 9,167	This sounds like the security settings on the phone. The phone can be set to allow only a certain SIM or number of SIMs to be used. This is so that if someone steals your phone they can't use their SIM. Its easy to change this in the security settings.

21-01-2007, 11:21	#7
BrightSparks Forum Member Join Date: Nov 2005 Location: uk Posts: 1,029	Quote: Originally Posted by iMeMyself Yeah, you're right but we actually got the phone unlocked by Virgin which should allow us to use ANY sim card. Virgin would not unlock the phone to any network!! Its your backstreet shops that would unlock ya phone to any network or if the phone was bought as sim free i.e you buy the phone at a higher cost then its up to you to choose what ever network ya want, The reason network providers have it locked to there network is cost they subsidize the price of the handset which then ties you to there network and hence get the money back through ya bill or top-up. also virgin do use the tmobile network

21-01-2007, 11:57	#8
Jac Naylor Forum Member Join Date: Jan 2007 Location: AAU Today. Posts: 251	I don't understand how Virgin can unlock the phone - with Sony Ericsson phones they HAVE to be unlocked via a cable connected to a computer, you can't just enter a code like Nokia mobiles. The phone is still locked. As Virgin uses the T-Mobile network, both these SIMs will work fine. To use another other network you'll need to get the phone unlocked at the market or in an independant phone shop. If you have been charged by Virgin to have the phone "unlocked", get your money back.

28-01-2007, 19:39	#9
bluechang Forum Member Join Date: Nov 2006 Posts: 2,836	i was told yesterday by a virgin mobile representative that a t mobile sim will not work without the handset being network unlocked

29-01-2007, 18:07	#10
prking Forum Member Join Date: Sep 2002 Location: Weston-super-Mare Posts: 9,167	Quote: Originally Posted by Jac Naylor I don't understand how Virgin can unlock the phone - with Sony Ericsson phones they HAVE to be unlocked via a cable connected to a computer, you can't just enter a code like Nokia mobiles. The phone is still locked. As Virgin uses the T-Mobile network, both these SIMs will work fine. To use another other network you'll need to get the phone unlocked at the market or in an independant phone shop. If you have been charged by Virgin to have the phone "unlocked", get your money back. Virgin is a virtual network, however you can still lock a phone to Virgin and a T-mobile sim won't work in that case. The OP doesn't say that they entered a code so I don't know where you got that from. (Incidentally, I think you are wrong about needing a cable unlock)

29-01-2007, 18:55	#11
Ethereal. Forum Member Join Date: Jan 2007 Location: Good question Posts: 456	Quote: Originally Posted by prking Virgin is a virtual network, however you can still lock a phone to Virgin and a T-mobile sim won't work in that case. The OP doesn't say that they entered a code so I don't know where you got that from. (Incidentally, I think you are wrong about needing a cable unlock) Jac is right you do need a cable to unlock a Sony Ericsson.

30-01-2007, 11:14	#12
BrightSparks Forum Member Join Date: Nov 2005 Location: uk Posts: 1,029	yup its a box of tricks and a cable ya need, my m8 has a phone shop and he paid £300 for the box and software for all the new SE phones that are out cos they are very hard to unlock and flash.....(ones like the k800 ect)

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T Mobile Sim Problems