I realised, yesterday, that my phone had not rung but had done its usual vibrate alert.
Strange I thought, very quick on the uptake me.
So checked the phone settings, all OK, switched it off, removed the battery, removed the sim card put it back together, voilà, it still didn't work.
Decided to have a look on the net at the manufacturers site, quite helpful, suggested download of software and re-program of phone, did this but made sure had back-up of all the info on phone before doing so, this did not solve problem.
Sent e-mail to manufacturers and had reply within 10 minutes, take it or post it to a repair facility. This will cost.
Had another brainwave, they do happen honest, phoned phone supplier (Orange), within five minutes (three minutes of waiting) I have a replacement phone on the way, will be here tomorrow. No charge.
The phone is eighteen months old and not insured.
Thank you Orange
ps. Going to see the boat next week.