I run my own Electrum / ElectrumX servers so I want to try to connect to them with my wallets.
Some mobile wallets such as Electrum and Coinomi allow me to connect to them. But, others do not such as Mycelium and Green.

Coinomi is kind of interesting in that the mobile version does have a setting to change the BTC SPV but I did not see it for any other coins. And I could not find it at all on the desktop version.

The bitcoin mobile wallet has the setting but it would not connect to my node. So that could be them or me, probably me but wanted it out there.

Now, I did not dig that deep into all the wallets out there so it could be someplace that is really not obvious, or it could be it's just not there.

But, it just seems to be a big security / privacy / functionality thing not to be able to do it. Possibly more privacy then security and a but it's still there.

Any thoughts.
Side note: This is a moderated thread because I can see it going off the rails very quickly.

Stay safe.

-Dave