Userboxes.

This user's mobile phone and data services provider is T-Mobile.
This user's mobile phone and data services provider is Verizon.
This user's mobile phone and data services provider is AT&T.
This user's mobile phone and data services provider is Sprint.
This user's mobile phone and data services provider is Nextel.
This user's mobile phone and data services provider is Bell.
This user's mobile phone and data services provider is Rogers.
This user's mobile phone and data services provider is Telus.