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Sir,
i purchased a Samsung Galaxy Y Pro Duos GT-B5512 from distributor. He said me that the phone is Dual Active, also on the box this line is printed "When one sim is on the line, the other sim is still active". for the dual active purpose i buy this mobile phone. but currently the distributor and the company is saying that the phone is of STAND BY catogery. so please guide me & give the decision...
thanking you.
A phone that can handle two gsm sim cards, but only one is active at a time hence the term "standby".
There are also dual sim active phones which allow both sims to be on at the same time. I don't see any advantage to this though.
Dual sim phones use up more battery power then single sim phones and are also generally more expensive and rare (except for all those cheap generic Chinese Shanzhai models, or knockoffs.).
This is a good way to save money if one carrier offers a very good rate on say talk/messaging while another has a better mobile web/data plan.
It can also be used if you have two lines, one for business, the other personal. Or even for frequent travellers who use one sim from their home country and another in the country they are visiting.