Got my Piranha SIM - give yourself some time to get it up and running before you depart on your trip as their documentation is difficult to follow and there are several redundant paths to the same solution.

1) You need to log into your account on the website to activate the SIM. After login, click on Accounts Admin-SIM Accounts, then click the View|Edit|Top-Up button next to your mobile account number, then Set Account Status to Activate Account, then click Update SIM.

https://www.piranha-mobile.com/index...=userhelp/help

You will be able to get your US and UK phone numbers from that page as they are not listed on the SIM card itself.

2) If you're on an iPhone 6 like me, you should to download two apps from the Apple Store:

The SIM app gives you some (clunky) management of the SIM - to get your balance, go to Edit SIM Settings, set Fetch Account to your phone numbers, and click Get Account Information - you can also get Call Rates and Call Logs fairly easily from the main menu:

https://itunes.apple.com/us/app/pira...950761747?mt=8

The SIP app enables VOIP, which is their cheaper option - you need to get your SIP username and password, which are not the same as your Piranha username and password, from the SIM app above - they are NOT accessible online, only via the SIM app, or you can text SIP to 222 and receive the info back by text (not free):

https://itunes.apple.com/us/app/pira...959472891?mt=8
https://www.piranha-mobile.com/index...=userhelp/help - select Using and Setting Up VOIP

3) The SIM is plug and play for voice - got on the T-mobile network in the US no problem. However, to access data on an iPhone, you need to install an APN dongle on the phone. There are several routes to this:

a) If you try to access a website, a link to the APN install will come up automatically (slowly).
b) In the SIM app, select APN Settings, select your phone number, and click Send APN Link.
c) Navigate to http://openroamer.com

Once the APN is installed, you will be able to access data while roaming. HOWEVER, once you put your original SIM back in (Verizon for me), you have to delete the APN to access data on that SIM - Settings / General / Profile / openroamer / remove

https://www.piranha-mobile.com/index...=userhelp/help - select Set Up Mobile Data

4) Be sure to check Settings / Phone / SIM Applications for shortcut numbers to balance info (*301#) and SIM phone numbers (*113#). This info is also available in the SIM app under User Guide / Balance and Numbers


FYI, I was able to get a bundle with SIM plus £30 credit for £35, but looks like they just updated the website and now you can ONLY purchase the SIM Starter Pack with SIM plus £5 credit for £12.