What would an honest in-flight announcement sound like? Among other things, it would say… Please switch off all mobile phones, since they can interfere with the aircraft’s navigation systems. At least, that’s what you’ve always been told. The real reason to switch them off is because they interfere with mobile networks on the ground, but somehow that doesn’t sound quite so good.
Phones can be used on flights. (from The Economist. Requires subscription) On an average transatlantic flight, several phones are usually left switched on by accident, and the avionics systems on modern aircraft are hardened against radio interference. No, the use of phones on planes is banned because they disrupt mobile networks on the ground. An airliner with 500 phones on board, whizzing across a city, can befuddle a mobile network as the phones busily hop from one base-station to the next. ...
Nokia codes (works on my 3310) *#war0anty# Warranty details *3370# Better sound, drains battery #3370# Deactivates above *#0000# Software version *#06# IMEI number *#sim0clock# Allow simclock stoppage *3001#12345# Enables field test mode, other options *#92702689# System menu BPL Mobile Call Divert options **67*700# If number is busy **62*700# If number is unreachable **61*700nn# If no reply for nn seconds **21*700# All calls ##002# Cancel all call diverts
2 good things: roaming rates cut, bandwidth rates cut.
A note from my friend Ashish: “To check your Mobile phone’s serial number, key in the following digits on your phone: * # 0 6 # A 15 digit code will appear on the screen. This number is unique to your handset. Should your phone get stolen, you can phone your service provider and give them this code. They will then be able to block your handset. So even if the thief changes the SIM card your phone will be totally useless. If everybody did this, there would be no point in stealing mobile phones.” ...