While signing up for all kinds of things online you might be occasionally be asked to provide a mobile phone number to receive a verification code (or for any other reason). Just found https://www.receivesmsonline.net/
which lets you use there numbers and get texts for free. Downside is anyone can read it, but for verification pin texts it is perfect.
I used it while in Ubud, Bali, Indonesia while signing up for GO-JEK (their version of Uber). Was very handy! Enjoy
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