NOTE: Make sure your Bot Phone and your personal phone have free data roaming or these steps will end up being very costly.
Manual Network Selection on Bots
Manual Network Selection on Commander Devices
To lock your own device on a specific carrier, you will need a plan that supports Manual Network Selection or Manual Carrier Selection.
For Android Devices
Once it is enabled, you will be able to go to Settings>Network>Mobile network>Advanced and have a section that lets you turn off automatic selection and pick a network. On older phones this feature takes a fair bit of time to search (as much as 5 minutes). If the search fails, you may need to reset your network connections in the phone.
For iPhone Devices
Once it is enabled, you will be able to go to Settings>Mobile Data>Network Selection>Enable Manual Network Selection and pick a network. On older phones this feature takes a fair bit of time to search (as much as 5 minutes).
** If you are in the US and using AT&T, here is the process we've found. Call support, ask for international support, and then ask for ATS (Advanced Technical Support) team. The change takes them a few minutes.