Moble phone coverage in Andalucia?
 

After taking my UK phone with me for the last 5 years and having no problems with reception--its on Orange,last week I couldn't get a signal in Aquqdulce in Sevilla province and when I went towards Osuna it was OK but with Xfera not the usual Movistar.
I have a "Spanish " phone on Orange and that was OK.
Any ideas why anyone?
PS The UK phone is fine in the UK today.