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Our international SIM card is designed to work with all mobile GSM handsets. In reality, it works with almost all handsets in the usual way but a few handset models may require you to make calls and send text messages using the HOPSIM menu that will appear in your phone once the HOPSIM card is fitted

Very few mobile handsets will NOT work with our service at all but if you are still concerned, why not consider buying a SIM and handset package which is ready to go?


Some mobile phone Networks operate on different frequency bands so it is important to check that your mobile phone is compatible with the Network in the country where you want to use it.

Until recently there were 3 GSM bands used across the world:

* 900MHz
* 1800MHz
* 1900MHz

Tri-Band GSM mobile phones operate on all three of these frequency bands although most modern European mobile phones will work on at least two frequencies: 900 and 1800 MHz (known as Dual Band GSM).

1900MHz is typically used in the Americas, so a transatlantic traveller would be well advised to opt for a triband (1900MHz) mobile phone. However, in the Americas some networks operate exclusively on 850 MHz. A mobile phone that is designed to operate on all four of these frequency bands is called Quad Band (850 Mhz, 900MHz, 1800MHz and 1900MHz) and phones that are 3G compatible will allow high speed access to the Internet where the service is available.

HOPSIM been awarded the
"Best Startup 2011- Silicon India"