Cheap and effective

A real, live person answered the phone last time I called for assistance. To be fair, that was several years ago - because assistance is not something much needed with Tello. Less than twelve bucks a month for unlimited calling, unlimited text, and a gig of high-speed data. Need more than a gig? Couple bucks more... What's not to like?

The reason I gave 4 stars instead of 5…

Very good product, with flexible plan options and great quality. I especially appreciate the calling app, which solves the issue of poor call quality caused by weak carrier signal. Calls made through the Tello app are very clear. Also, Tello’s choice of a blue-themed design is very pleasant to look at. The reason I gave 4 stars instead of 5 is because Tello tends to suspend accounts too easily, often without sufficient reason, and once an account is suspended, there is no way to appeal or recover it. This is the only downside so far.

Price

Price, price, price. I get great reception on my phone which is what I use it for. That is all I need and the price helps my budget enormously.