Firstly, I just want to add that we have a multi-quote feature to keep all these disjointed replies on one post (works just as fine with multi-replies): https://www.blackhatworld.com/seo/how-to-use-the-multiquote-feature-on-bhw.975670/
Like this
Or this
You get the picture. Keeps the forums looking nice and tidy.
That out of the way, if you plan to seperate device fingerprints without switching phones, you're options are rather limited. Some devices let you have multiple user Profiles a la PC style with each running their (more or less) own apps. Each profile should have it's own app data which I suppose helps simulate a different device in some capacity. Since it's a common feature, you can't rely on it as-is. As with most sites, IG has ways to filter out the more basic setups that go against ToS in keeping with the changing tech landscape.
Before switching accounts you should make sure you're on a different IP (VPN and Datacenter proxies will not help you at all or at the very least won't yield the desired result). Clear cache and data of IG, change device specifics like language, timezone, etc. Could restart the device too.
Okay so as I'm considering what else could be done I realised it's too much trouble for it's worth and you could maybe get away with 3 to 5 accounts on one device assuming ideal circumstances. Not much wiggle space to operate on if you don't have the necessary anti-detect setup, session isolation, and dedicated proxy (mobile preferred but residential works, it depends) for each account.
