Pros (why this SIM card is worth it):H2O runs on the ATT Line which provides a good coverage in the United StatesThe plans are extremely cheap compared to other carriers like T-Mobile or Sprint

I used Ting, which has a much better coverage

Very poor coverage in 37920

Cons:Really poor coverage

Good coverage and affordable plans..

Otherwise, H2O proved to have very good coverage and service, and flexible prices.

Unreliable 4G. coverage.

My concern was that AT&T had the best coverage around my office and where I spend the most amount of time

Easy activation, very good service and coverage.

Good coverage and no issues so far (3 months)

Since it works with AT&T the coverage is the best (compared with VRZ, North-East region)

Good coverage

Doesnt have great coverage in basement

The Sim card was okThe wireless coverage for my ares was not that good

Can monitor use through website- ATT mvno so decent coverage (except see con)- chat support in addition to call support (

Excellent service and coverage at very low price $27

It has a decent coverage as well.

Good, works as it is supposed to

In 18+ months, I have used up my 2g of high speed data only ONCE.My complaints about H20:1.

My plan includes unlimited talk and text, 2g FAST data (LTE) and unlimited 2g after that.

No longer supports 2G for GPS devices