Note 4 no service

[Sherryplus]

Hey guys thought to ask for help here. My SM-910c doesn't run in LTE mode. I've to go to network mode and choose GSM mode only for it to work. And most of times when I restart it I've to wait 10-15 mins, for service signal to appear in GSM mode and for it to register to the network. Any idea what I can do? Is my only option to go to get it repaired under warranty? I attached the pic showing what happens while I wait after restarting for about 10-15mins before it even reads my sim and registers to the network.
I tried the same sim on other phones it works flawlessly. I hope to get some help on this .... last resort is to go get it fixed under warranty >_>.

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[ronb]

If you never get LTE, have you called your carrier? It could be a provisioning issue. Also before that, download the profile again: Settings > System Update >Update Profile. If that does not fix it, call carrier and have them check things. If you are still having no luck I would send it in for repair or exchange.
What carrier are you using?
Good Luck!
Ron