@SodaDrama Hi, thanks for posting question here. You may refer to P71-P73 in the User Guide to configure QoS on the device.

@Anonymous_25 Hi, welcome to our community. As it is a customized model by some ISPs only, it is a pity that we can know much less than common DSL modem routers. If you can not find the range...

@AshrafKareem Hi, welcome to our community. TL-MR105 does not support to select band manually. You may refer to the guide to know about supported models.

@RPang Hi, thanks for posting question here. You may check whether the router can get IP address and troubleshoot following the guide below: Troubleshooting guide of no internet access with TP-Link...

@tnf02 Hi, thanks for sharing your feedback here. I am afraid the IMEI of the router cannot be changed or modified casually. Maybe the best way may be to change your SIM card from another ISP.

@MaPou Hi, welcome to our community! Yes, they can. This guide may help a lot: Can different Deco models work together?