Microsoft Nokia 215ds

 The Microsoft Nokia 215ds is a Microsoft-era dual-SIM basic phone, and it shows.  This is in the sad, post-failure phase of Nokia's existence, during which the brand got reputation-mined by Microsoft.

The design is apparently too cool to say the model number, so unless you label it, it will end up as a mystery phone in the phone drawer.  The model number inside the battery compartment is given as RM-110, which has nothing to do with the 215ds under which it was marketed.

The handset's not really usable for basics.  It's not worth dissecting it fully, any more than it's worth dissecting a run-over badger, but I can give a couple of examples.

The address book's Name field is limited to 16 characters.  In practical use, this is often not enough to record someone's name with a brief reminder, like when and where you met them.  By contrast, on the Nokia 6100, my reference classic Nokia, I gave up trying to reach the limit in the name field just now.  The 3 lines initially presented held 46 characters, but when I typed on, it made a new line, and kept on going.  In practical use, I never reached any limit in the Name field in the 6100.

I wanted to give a 4-digit handset code to unlock, which was easy to do on classic Nokias.  Pressing "end" gives you left-soft-key as "Lock", which protects against accidental keypad use.  The same sequence is used to unlock: End -> left-soft "Unlock".  But I want an unlock code, not just basic keyguard.

Under Settings (you have to select the picture of cogs, because there is no option for text menus), I found "Security settings" -> Change codes, and I changed the code from the default of 12345.  Then I chose "Phone security" -> On.  But unlocking the keypad still didn't ask for the code.  Is it just a boot thing?  I rebooted and no.

As a last resort, I found the user manual.  In its section "Access codes", we are told:

Security code (lock code, password): This helps protect your phone against unauthorised use.  You can set your phone to ask for the lock code that you define.  The default lock code is 12345.  Keep the code secret and in a safe place, separate from your phone.  If you forget the code and your phone is locked, your phone will require service.  Additional charges may apply, and all the personal data on your phone may be deleted.  For more info, contact the nearest care point for your phone, or your phone dealer".

Astute readers may have noticed that one thing missing from these "instructions" is HOW THE FUCK YOU ACTUALLY DO IT.  Conclusion: you can't.  It's fake, a fake feature, and no one ever bothered to manage a process to test it, or manage a process to write a user manual that actually tells you how to do the things, or specify any sort of meaningful requirements at the start of conceiving of the handset model 215ds in the first place.