Piranha Mobile Sim Card

[rfranzq]

From another thread:

Originally Posted by davidtheprof

Wish Piranha could sort out the texting issues.....

What is the nature of your issues?
I just did some testing.

While on the T-Mobile network, I could send SMS from a T-Mobile and an AT&T MVNO to the US phone number.
I could not from the T-Mobile MVNO to the UK phone number but could from the AT&T MVNO.

While on the AT&T network, I could not send an SMS from the T-Mobile MVNO to the UK phone number but could from the AT&T MVNO.

When I first tried to send SMS to the US number from both networks it did not work.
The second time I tried I could send SMS from a T-Mobile
and an AT&T MVNO to the US phone number.
Flaky? I had just switched to the AT&T network when I tried the first time.

Do you have any experience that fits these pattersns?