Help LG L90 dual SIM 2G/3G issue.

[sanjibbehera]

I bought this mobile 1 month ago, it is working pretty fine except 1 issue, Initially I had a single SIM, where 3G was working well, from last 1
Week I have another SIM with 3G for the 2nd SIM slot, but the new SIM is not working at all, if I move it to gsm instead of wcdma, it works well (2G). Initially I thought of SIM issue, but when I moved the same SIM to LG PRO Mobile which also had another SIM before hand, it is wrking fine there.
Can someone help me here, how to resolve this issue?

 

[mamawm]

My L90 isn't dual Sim so I can't answer from that aspect. I am curious tho, you said you put the messed up Sim in the pro and it worked, did you by any chance put the Sim from the pro into the L90 to see if it then experienced the same issues?

 

[The Brain]

Late answer but even if the OP doesn't need help on that issue anymore, it can be useful to someone else:

LG L90 Dual (D410) is capable of 3G connection on any of the two SIM slots but ONLY ONE AT A TIME. You'll have to choose one of the SIM cards to operate in 3G (usually the same one assigned to mobile data) while the other will be limited to 2G.