Why can't N72 display the recipient's name when I receive a short message?

Why not give it some color to see see first? Hard grids can solve most problems. If the hard grid doesn't work, it's a hardware problem. Then you have to have it repaired.

Hard mobile phone: Business cards and materials in hard mobile phones will be lost (backup first). When the phone is turned off, press the green dial key, * key and 3 key at the same time to turn on the power until the word "NOKIA" appears. You can't release any keys during this process. Wait a few seconds until the words "Formatting ..." appear, and then release the key. After 3-5 minutes, the system will be formatted and the phone will automatically restart! Pay attention to keep enough power! !