6616? or something like that?
Why do you ask? Looking for something specific?
If you are look at Sony mobiles white paper. Also Sony Mobile will tell you the model number.
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it does look like it's 6616, the reason I ask is because I want to buy one and I travel a lot, but the model that T-mo sells has only 3 bands for LTE (Bands 2, 4, 12)
It looks like D6603 has the most bands for LTE should work perfect when I travel overseas