Lots of speculation, correlation and not a lot of reasonable conclusions.

The only speculation part is the timing, the rest are facts, only a naive will think a smart phone is ever private or anonymous. Your phone has a unique ID tied to the hardware that can ID you, your cell modem isn’t open source and is equipped with builtin high accuracy GNSS, plus other hardware and its non open drivers that can be exploited, among many attack vectors that are easily exploited on modern smartphones. This issue isn’t unique to phones too, many modern laptops are also part of it, TPM and plenty of hardware that aren’t really open, the only exception is a laptop can be used in an air gapped environment, not really the case with a smartphone, because assuming you managed to do so, it defeated its purpose to start with.

The conclusion here is if you are after anonymity then you should ditch your phone entirely, having a “secure OS” won’t provide such goal but it might bring more attention to you than using of-the-shelf average phone.