All my new iphone 7 stuck in 3G.
 

First let me explain my testing currently I have 7 plus with verizon, 3 iphone 7 all with verizon and 1 6s plus with verizon and tmobile and 1 6s also with verizon and tmobile. So after a lot of testing the iphone 7 on verizon or tmobile drop down randomly to 3G ... While my 6s plus or 6s on...

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Courtesy of WestNet Wireless
www.westnet.ca