Harold got a budget Android A01 phone and it won't take text messages. But it works with his old Samsung. Leo says that since Harold moved to Mint Mobile (who is a sponsor of the TWiT network), it's possible that his settings are misconfigured, and as such, his cell data isn't getting through. This can happen when you're moving things over. Mint says it may not be compatible with their service. Leo suspects that Harold's phone is from another region and as such, the radios aren't compatible for the US, when it comes to SMS Text messaging. That's likely the issue.
SMS Text messages
John wants to save SMS text messages. Leo says that in his Android device there is a built-in backup for text messages in the settings. But there's also a ton of apps out there including SMS Backup and Restore. SMS Android Plus. Check out the article here - https://www.androidpolice.com/2019/08/21/backup-sms-text-messages-android/.
People are getting text messages out of nowhere from people you don't know or remember. Turns out that phantom texts are a thing, and they happen when a text message doesn't get delivered until up to a year later!
Ben has an issue with 2-factor authentication. Leo says that text message 2-factor authentication isn't safe anymore because "sim jacking" can occur, by bad guys figuring out what your cellphone number is, and then using social engineering to get them to reassign that number to a new SIM. Once they do that, they have control of the mobile device and can control even 2-factor authentication. That's why Leo supports using an authenticator. He uses a hardware-based model called Authy.
Christina keeps getting text messages from a number she doesn't recognize. And it's creepy. Leo says sometimes those messages are spoofed with a number id that doesn't exist and it's largely SPAM. Not much you can do but have your cellphone company block them. If it's the same number. If the number changes, it's a real problem to stop it. And if it's harassment, it may be a crime.
Alexandra works for a non-profit and she's having issues sending text messages to large lists of clients. There's now a limit of only 10 per text. Leo says the same thing happened with email. It's all because of spam, so they're limiting it. That's why Leo recommends a mass text service. Leo recommends EasyTexting.com. They offer low cost or even free service for non-profits.
Daniel can't use his Google Voice number when he signs up for services. Leo says that is right. Some services don't support it. But there is a way around it through GoogleFi. They use Sprint and T-Mobile, and that voice number then becomes an SMS number. Some numbers aren't SMS enabled.