No. Standard text messages are not encrypted. Apple's own page says SMS/MMS messages "aren't end-to-end encrypted, which means they're not protected from a third party reading them", and Google's says end-to-end encryption "isn't available for SMS/MMS messages". iMessage and Google Messages RCS chats are encrypted, but only inside their own circle. To send a text that nobody but your contact can read, encrypt it on your phone with HushHush first, then send the ciphertext as an ordinary SMS.
What your carrier can and cannot see
A text message is a service of the mobile network. Apple puts it plainly: "SMS and MMS are services provided by network providers." Your phone hands the text to your carrier, your carrier hands it to your contact's carrier, and their network delivers it. At every step the message is readable, and Apple says what follows: SMS/MMS messages "aren't end-to-end encrypted, which means they're not protected from a third party reading them". Google's RCS page agrees about its own app: "Delivery of SMS and MMS messages, which are always sent through your carrier, won't change."
The encrypted alternatives only work inside their own circle. iMessage is end-to-end encrypted between Apple devices: the blue bubbles. Text an Android phone and the bubble turns green, meaning SMS, MMS or RCS. In Google Messages, RCS chats are end-to-end encrypted "when all conversation participants use Google Messages with RCS chats turned on", and Google says this "isn't available for SMS or MMS messages". Between an iPhone and an Android phone, Google describes end-to-end encryption only between Google Messages users, and Apple says encrypted RCS on iPhone is a beta in iOS 26.5 that is "available with supported network providers and will roll out over time". Without it, Apple says, "your RCS messages aren't protected from a third party reading them".
Both apps fall back quietly. No data signal, a contact whose phone is off, a carrier that does not support RCS: the message goes as a plain SMS. The bubble colour is the only warning you get.
| What | SMS today | With HushHush |
|---|---|---|
| The words you type | Visible to your carrier | Ciphertext only |
| Who you text, and when | Yes | Still yes |
| The content, if a text is kept or handed over | Readable | Ciphertext only |
| When a green bubble falls back to SMS | Plain text, no warning | Still ciphertext |
| How long the message is | Yes | Still yes, and longer |
Who this affects
SMS is the message you send when nothing else works: a contact who refuses to install another app, a phone signal but no data, a number you only have as a number. A parent texting a child's new address to a grandparent. A solicitor whose client is on an old Android. A journalist whose source has an iPhone but no data plan abroad. A couple sharing a door code.
None of those people are doing anything secret. They just do not want the text sitting readable on a network they do not control, or turning up later in someone else's records. SMS gives them no choice: the content is the carrier's to see.
How HushHush helps
HushHush encrypts the text on your phone before it goes anywhere near Messages. What you paste into the SMS is ciphertext: ordinary letters and numbers, so it travels over SMS like any other text, on any carrier, between any iPhone and any Android phone. Your contact copies it and taps Paste in HushHush to read it. Both of you need HushHush, and you pair once, in person, by scanning each other's QR code. Two things to know: the ciphertext is longer than the message you typed, so a long message may be split by the carrier into several texts, and your contact needs to copy all of it; and the carrier still sees both numbers and the time.
Pair once, in person
Open HushHush, add a contact, and scan the QR code on the other phone. No account, no phone number, no server.
Type it in HushHush
Write the message and tap send. It is encrypted on your phone and copied as ciphertext.
Paste it into Messages
Your SMS app carries the ciphertext. Your contact copies it and taps Paste in HushHush to read it. If you both connect Telegram, Matrix or email inside HushHush, it is sent and decrypted automatically instead.
What HushHush does not do. It does not hide who you text, when, or how often; your carrier still sees both numbers, the time and the length of the ciphertext, and can tell it is not ordinary conversation. Both people need HushHush and one in-person pairing. It protects the text only, not calls or anything else your Messages app does. And it does not make SMS reliable: a text that never arrives is still lost.
Frequently asked questions
Are text messages encrypted?
Can my carrier read my text messages?
Is iMessage end-to-end encrypted?
Are RCS messages encrypted?
How do I send an encrypted text on iPhone or Android?
Encrypt it before the network sees it.
HushHush is on the App Store and Google Play. Pair in person, then send in any app.
Related
Sources
- What is the difference between iMessage, RCS and SMS/MMS?, Apple Support, accessed 7 October 2026.
- Turn on RCS messaging on your iPhone, Apple Support, accessed 7 October 2026.
- How end-to-end encryption in Google Messages provides more security, Google Messages Help, accessed 7 October 2026.
- Use end-to-end encryption in Google Messages, Google Messages Help, accessed 7 October 2026.
- How RCS chats keep your conversations secure, Google Messages Help, accessed 7 October 2026.