I am looking for a arduino shield to connect internet via sim and found the following two products. Any recommendation which one will be better? I will be using them in United Kingdom using arduino UNO.
Can someone pin point the key difference between these two and
ARDUINO - A000043 - SHIELD, ARDUINO, GSM, INTEGRATED ANTENNA http://uk.farnell.com/arduino/a000043/shield-arduino-gsm-integrated-antenna/dp/2305925
Cellular Shield with SM5100B http://proto-pic.co.uk/cellular-shield-with-sm5100b/