There have been posts in the last year in this subreddit about anonymous SIM card options. I find the whole idea really fascinating in that we have a few limited options to achieve some level of anonymity. The part that I have struggled with is the phone part.

Presumably, you would not use an anonymous SIM card with a phone you have already used with a SIM that has already been associated with you. (From my understanding, this is because at least one mobile carrier with have the IMSI-IMEI pair stored somewhere which will leak your true identity. Correct me if I'm wrong.) Due to this, I believe it's necessary to use a phone that has no history of being attached to your identity.

I've been looking around to see what options there are available that are reasonably priced.

My criteria is as follows:

• Preferably sub-$50 range (if this is too low then sub-$100)
• Ideally running an Android so that some secure messaging apps like Signal and Briar can be used (non-Android options would also be interesting)
• Unlocked as I believe this to be a requirement to use the anonymous SIM options we have available

My limited research has found a whole bunch of the budget Telstra phones which you can get from the supermarket which are all locked. I've also found some pricier options closer to the $100 mark which might be suitable but I'm wondering if there's something cheaper available.

Any ideas? My usage would really just be a spare phone in case I want to attend a something like a peaceful protest.