Cant answer you regarding 3G because where we live its not an option! Suggest you check out the websites for the various suppliers to see whats available where and at what price.
Regarding Telefonica ADSL coverage check out this link;
https://www.movistar.es/on/pub/servicios/onTOEntrada/0,,entrada+rd_coberturas_smd+v_segmento+AHOG+v_idioma+es+menu_izq+adsl+ambitoAcceso+pub,00.html?uri=/on/io/es/pie/coberturas/consulta/internet.html
If you can input a postcode and an approximate address they should be able to display whats available in that locale.
Note that Telefonica now operates under the name Movistar. The web address is www.movistar.es
Another couple of points to consider when moving to the more rural areas around Granada is that electricity supplies can be temperamental and subject to frequent breakdown , particularly when it rains. A UPS is virtually a necessity for using a computer.
Also, rural water supplies from the taps is undrinkable and it too is liable to no-notice cut-off for anything up to 3 days.
We had a total water shut-off and intermittent electrics over the entire Christmas period.
Regarding telephones…whilst its very nice to have one of the cordless handset type of phone, they are totally useless in the event of a power cut since the base unit requires mains power. Stick to the old type; they derive their power from the phone line!
Welcome to Spain in the 21st Century!
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