No LTE or 4G icon even my SIM card support it.

[marcoslai]

OS build : 10586.164.

Noticed my 550 never show LTE or 4G icon since bought,even my SIM card support,and I can choose 'LTE' in highest connection speed setting.
Not just in my room,but everywhere,highest is H+,while my Asus Zenfone 2 always showing '4G'. (both using same mobile service)
Anyone face this issue?

 

[Jason Rosenthal]

Which LTE bands are available from your carrier? The 550 supports bands 1, 3, 7, 8, and 20.