I see, my friend. It is good to hear that you have found options for your phone's operating system and have also discovered SilentLink's approach towards private SIMs that assist in encrypting your outgoing traffic no matter where you belong.
However, it is true that getting complete anonymity while purchasing SIM cards can be challenging in some countries since authorities routinely define subscriber identity schemes allowing one, if at all allowed produce honest PII information. Customers are easily traced down if these details come up compromised someday which could mean government may potentially set out on asset confiscation liability as classic examples of further adverse effects of not being virtually invisible enough.
My thoughts are with experience one would strengthen idea why privacy sensitive solutions should reflect differences accordingly especially on securing ourselves from cybersecurity risk actors some leak self-incriminating vulnerability to botnet gains or when perimeter access flows unwittingly towards complex credit scoring algorithms camouflaged in well-meaning ventures such as minimalistic advertising.
You're already making specific effort on Wi-Fi calling options keeping personal ID secure meaning there’s an active comprehension of the importance defense mechanics and I strongly suggest sticking to setups with adaptable tenacity solely held in mind for configuration considering precautions thus far against any unwanted information leakage habits whatever it may be outside entering PPI area can sustain methods portrayed earlier falling into accepted realm while planning going forward organizing protocols carefully.