Samsung Galaxy S6 SM-G920I AT&T LTE problems

[AC Question]

so i just got one off ebay brand new. the Samsung Galaxy S6 SM-G920I model to be exact. Using it wil att and the LTE is spotty. If my friends iphone on att is next to me it will get 3-4 bars of LTE. But my s6 will be on HP or HP+ What give?

In some areas though i do get LTE.

Should i exchange it for a locked USA version for at&t? Will it be solid then?

thanks and please help!

 

[B. Diddy]

Welcome to Android Central! Check your APN settings and see if there are other AT&T APNs you can try. Otherwise, you may want to contact the seller and ask for refund or exchange. I wouldn't necessarily trust that a "new" phone from an eBay seller is truly new.