I'm trying to change the cover colors on two Beocom 1 handsets I have.  I have no problem removing the battery cover and the two screws inside there.  But I can't seem to pry loose the main shell.  I'm inserting a butter knife in the groove on the side but no luck prying it off.  What's holding it on?  Thanks in advance.  

The cover is held in 4 places as shown below.

The correct way of opening the unit is to slip the tool or very thin flexible blade either side of the top of the battery compartment allowing the back to lift 1-2 mm, with both sides lifted a couple of milli metres, then insert the tool near the ear piece and the phone will come appart

Hi Keith,

Your picture also shows, that there are 2 clips in the top of the handset (one at the IR lens and one in the other side - not marked with a red description). My experience is that these are the must vulnerable and that they break easily. Therefore I also recommend that the backpart is moved upwards to avoid breaking the last two clips.

Other than that I think your images and the description is great.

Br,
Burnix