3G sim in K750i - Esato archive

Posted by Kris_M
I have 3G sim card on the 3 Network and when I put it into my old K750i it says please insert sim, but the phone is unlocked. Any one know why this is please?

Posted by b3rx
maybe the sim is just loose try to remove it and put it back again. most of the sometimes that fixes the problem.

Posted by Kris_M
Tried that m8

Posted by mswallis
It's because it's a 3G sim card, it will not work in a 2G phone, simple as that.

Posted by eskay
Since your phone is not a umts phone it does not support 3g networks. Thats why you get the message insert sim

Posted by aminator
3G sims DO work in 2G phones

Posted by gareb
My sim 3g worked perfectly in my old K750.

Posted by thegreatone
i think '3' network won't let you use there sim card on a 2g phone

Posted by gareb
@thegreatone

That's correct but that is the operator 3 who dont wanna have their cards in 2g phones.

Posted by thegreatone
i thought so i ve been to other countries and had 3g sim card in my t610 with no problems

Posted by jcwhite_uk
I have tried "3" sims in 2G phones before and they do not work. I have tried 3G sims from O2 and Vodafone and they work perfectly in 2G phones.

Posted by Kris_M
I wonder why that is?

Posted by night_66
Operator 3 WONTS to let thier people use 2G network .. cause they rent the capacity from other operators .. but the 3G network is thier own !! this is the problem for operator 3 ..

Other 3G Sim cards which are NOT belongs to 3 OPERATOR works well .. i have 3G Tele2 Comviq in Sweden and i can use it in all phones .. 2G or 3G .. without problems .. the only 1 thing which is different, when you put your 3G sim card into a 2G phone, the searching for Network will take abit longer time than normal 2G (GSM) Sim card ..