EE carrier of UK is providing Huawei E3533 mobile WiFi modem for £19.99 upfront payment.
Basically, the Huawei E3533 Mobile WiFi comes under two plans in the UK through EE :
|Data||Data duration||Upfront cost|
It is a 3G data card, that measures 68 x 25.8 x 7 mm and weighs 30 gms. It is compatible with Windows XP (SP3), XP SP2, Windows Vista, Windows 7, Windows 8 and Mac OS X 10.6 or later.
Since the device comes locked to EE network of United Kingdom, you can not use any another carrier SIM card without unlocking it.
Unlock code charge is the only 6USD. While paying mention model with IMEI in the transaction.