We've all owned one phone that gets us all nostalgic. What's yours? Tell us using #O2magchat, we'll put our favourites in Feb's O2 Magazine.

@O2 #O2magchaty first ever phone. Bosch 509e. Everything is better when it's transparent modip.ac.uk/sites/modip/im…

@O2 any o2phone is nostalgic who would use yr services shocking !!

@O2 Nokia 3210. A true classic.

@O2 #magchat My Nokia 7110. Roller scroller, first phone I had with WAP. Active slider. Way too cool for its time. Great screen too. :-)

@O2 Nokia 7600 reminds of being at uni and the first phone I used to take pictures ☺️ #O2magchat

@O2 First phone was a Nokia Ringo but my fave was my Red 8210 ☺️

@O2 Nokia N95 - loved that phone! Soo many memories! Might have to try & get hold of one again 😃 Oh, & the Motorola ROKR E1! #O2magchat

@O2 easy - the Nokia 7110 was the one - classic matrix phone that was not even in the bloody film - they had a 8110 with added spring effect

@O2 my first Nokia 3210 , that thing was indestructible #O2magchat

@O2 has to be a nokia 3310! #O2magchat

@O2 Nokia N95 - simply amazing device #o2magchat

@O2 Motorola Razr V3. It survived a sink, still works <3 #O2MagChat