My china i phone dual sim which i use in spain is reading invalid sim in uk why please

hi...

u have to register ur china handset with ur service provider.

chaina sim rejister

I HAVE A CHINA SET SIGMATEL S90 DUAL SIM ONLY SIM 1 IS WORKING FOR SIM 2 SHOWS AS INVALID SIM FROM FEW DAYS PLEASE SOLVE THIS PROBLEM

BABU
9035040544

i have a china made mobile n8 but after inserted it shows invalid sim what's the solution of this problem

Dear Sir's
I purchased mobile dual SIM China Sigmated FXD T99i. But 2nd SIM not activated and show Invalid sim on desktop since Decembir-2009
Kind Pl. help me & guide. My mobile No is 9535907858

dear friend nokia have not realised nokia 5310 dual sim, this is china mobile, u can fix this by instaling imei number your problem will be solved

No two imei numbers are not allotted to single phone...
Try using different sim or on settings use enable 2 sims option!!1

Your phone is a Dual Band, it only works with 900/1800mhz. Make sure that the Sim install in the second Sim slot work for these bands here. Other wise it won't work. Another problem could be the imei number, most of the time it can be resolve by changing the imei number for the second Sim slot, but is kind of hard.

This phone does not work in the UK anymore as stated on any legit ebay site for the Sci Phone.

i have the same problem i keep on putting my sims in (one tesco sim & one voda phone sim) and it said the same thing invalid sim. the sim regestars for about 2 seconds then it either says invalid sim or emergancey calls. whats a matter with it should i send it back.kjr2502