USSD codes not working

[hafizabadian]

USSD codes are not working on my iphone 4S having ios 7.0.4. Any other way of using them???

 

[jsntrenkler]

Welcome to iMore --- Are you using a Gevey Sim?

 

[hafizabadian]

no man its not gevey sim

 

[Amjad Magsi]

Same here with R sim ios 7.0.6. Pls solve

 

[Just_Me_D]

Same here with R sim ios 7.0.6. Pls solve

iMore and Apple are NOT the makers of the R sim or Gevey SIM cards, so to be best served, I recommend you contact the makers of the SIMS you are using.