[Mayson]

This method is flawed. Whenever you download the PayPal phone app, PayPal immediately gets access to your phone's IMEI, therefore all logins through the app are automatically linked together. There is no way to refuse PayPal access to your phone's IMEI -- if you refuse to grant the app permission, the app won't run, just like Uber, Lyft, or virtually any other app.
Once PayPal detects that one IMEI is linked to several PayPal accounts, those accounts will not automatically become limited, but will require verification (such as phone verification) before payments are processed. This is only true for using the app.
Using the phone browser, however, is a different story, since PayPal has no way of obtaining your IMEI, although they can obtain a fingerprint, like a normal PC browser, so you need to change your fingerprint whenever logging to different accounts on the same phone browser (such as canvas, plugins, font count, etc).