1) Loud ringing volume (vital!)
3) Battery able to withstand for 3-4 days at least (a few calls a day)
4) Less than $100 (new or 2nd hand)
My dad's phone is faulty, so i hope to get him one soon to replace it. My dad is a simple user, just simple phones will do. Don't even need a camera or polyphonic. I saw some cheap phones selling at 7-11. Not sure how good they fit the bill. Any idea?
Hope to get some ideas from here. Thanks in advance.