From: John DeArmond via rockbox <rockbox_at_cool.haxx.se>
Date: Sat, 27 Apr 2019 15:51:10 -0400

On 4/24/19 8:13 PM, Christopher Chaltain via rockbox wrote:
> I don't think it's that hard to keep a smart phone from connecting to
> a network. If it doesn't have a sim card in it, it won't be connecting
> to any cellular networks. If you don't want it connecting to wifi then
> either turn off wifi or go into airplane mode. I'm not not sure how
> easy it is to find a smart phone with a removable battery though.

At least with the phones I have, none of them will start without a SIM
card inserted.  Essentially all the phone's personality is contained on
the card.

Most of my old phones have a config option to "turn off access to net." 
Today when I was in town where there's a signal I flipped that option to
off.  Nothing cell-related worked.  No signal strength indicator, no
text reception from my wife's phone.  No network signal strength
indication in the config screen.

If that's not enough assurance, you could call the last service
associated with that phone (what pops up on the boot screen) and make
sure no number is associated with that MEIN.

If you're still not sure enough, pop the back off an look for the tiny
cable that runs from the phone PCB to the antenna.  Use a pair of
tweezers or something similar to snap loose the banjo connector,
preferably on the PCB end.  Nothing else short of doing a Hildebeaste
(smashing the phone with a hammer) can guarantee it'll never go on the
network again.

John



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Received on 2019-04-27