Realising and implementing 3G can be achieved effectively through a series of incremental steps, building on the global track record of GSM - the world's most successful digital cellular technology.
If you are looking for a compact GSM/GPRS module, you can get the SIM800L from most eBay traders. It is not the most judicious choice, but you can build your own basic GSM projects with a cheap modem ...
A 2.5G GSM/GPRS/EDGE SW Protocol Stack that has been integrated with multiple basebands and shiped in 1bn phones and M2M modules world wide. Extensive ...
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