Will mobile phones work, and will there be a signal?

Mobile phones are now widely used almost everywhere. To give one example: Those volunteering in Peru will discover at Lima Airport located at Callo that a mobile phone can be easily rented for the length of their stay for around US $30 per month. Mobile phones can be bought, or a SIM card purchased for use in an unlocked phone brought from home. The reliability of phone signals will vary, of course, but the team at the placement will be only too willing to give advice regarding which networks function best and where on site to get the best signal. Equally, advice on phone cards to use in payphones is provided for volunteers. Lastly, depending on local conditions, the family with whom the volunteer is staying may well have a landline to which incoming calls will normally be welcome.