Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Tello - Tello is a mobile virtual network provider that provides users with the 4G LTE network coverage.
Nextiva - Business VoIP, cloud phone systems trusted by more than 150,000 companies. Powered by the leading cloud PBX VoIP platform, Nextiva is rated the best business VoIP service provider.
US Mobile - US Mobile is a platform that offers a wireless network to users for tablets and phones.
3CX - Hosted PBX with CRM integration and mobile apps
Ultra Mobile - Ultra Mobile is a platform that offers users unlimited text, talk, and data services to users through its 4G LTE network.