TP-Link M7350 User Manual page 32

Network Mode: The device supports three modes of network connection - 4G Preferred,

4G Only, and 3G only. If your SIM card supports WCDMA, select 3G only; if your SIM card
supports FDD-LTE, select 4G Preferred or 4G only as you need.
Network Search: The device provides two types of network connection - Auto and Manual.

Please select the connection mode as you need.
Auto: The device will automatically establish connection once it's started.

Manual: When you select Manual and click Save, the device will search for mobile

networks automatically and you can choose a network with better performance to
access, which is related or have cooperation with the network provider of your SIM.
Click Save to save your settings.
4.4.1.3. PIN Management
You can configure your PIN code on this page.
M7350
Network Mode Settings
Figure 4-14
-22-
LTE-Advanced Mobile Wi-Fi User Guide