Apple text messages are sent through the Messages app using one of four services: iMessage, RCS, SMS, or MMS. Blue bubbles identify iMessage; green bubbles identify RCS, SMS, or MMS. A green bubble alone does not reveal which of those three services carried the message.
What does “Apple text message” mean?
It usually means a message sent or received in Apple’s Messages app. The app can use Apple’s iMessage service or carrier-provided RCS, SMS, and MMS, depending on the recipient, settings, network, iOS version, and carrier support. Apple describes iMessage as a secure messaging service available in Messages on iPhone, iPad, Mac, Apple Watch, and Apple Vision Pro.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Apple iPhone 14, 128GB, Midnight - Unlocked (Renewed) | $300.00 | Buy on Amazon |
| 2 |
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Apple iPhone 16, 128GB, Pink - Unlocked (Renewed) | $552.01 | Buy on Amazon |
| 3 |
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Apple iPhone 15, 128GB, Black - Unlocked (Renewed) | $409.00 | Buy on Amazon |
| 4 |
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Apple iPhone 13, 128GB, Midnight - Unlocked (Renewed) | $262.00 | Buy on Amazon |
| 5 |
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Apple iPhone 16e, 128GB, Black - Unlocked (Renewed) | $388.34 | Buy on Amazon |
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What do blue and green bubbles mean?
- Blue: The message was sent with iMessage.
- Green: The message was sent with RCS, SMS, or MMS. The color does not distinguish among those services.
Green does not automatically mean a message failed. It means that particular message used a carrier messaging service rather than iMessage. Apple lists several reasons this can happen: the recipient does not use an Apple device, iMessage is off on either device, iMessage is temporarily unavailable, or settings need attention after setting up a new device.
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| Service | How it is carried | Bubble color | Features and security |
|---|---|---|---|
| iMessage | Wi-Fi or cellular data through Apple’s service | Blue | End-to-end encrypted; supports delivery and read receipts and typing indicators. |
| RCS | Carrier-provided service | Green | Supports richer messaging features. End-to-end encryption depends on support from the providers for all participants. |
| SMS/MMS | Carrier-provided services | Green | Not end-to-end encrypted, according to Apple. |
These distinctions matter most when you are checking privacy or expecting features such as typing indicators. Apple’s comparison of iMessage, RCS, and SMS/MMS explains that iMessage conversations are end-to-end encrypted, while SMS/MMS are not. RCS may support end-to-end encryption only when the providers for everyone in the conversation support it.
#1 Best Overall
- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
- Please check with your carrier to verify compatibility.
- The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable.
- Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
When can an iPhone use RCS?
Apple says RCS on iPhone requires iOS 18 and a text-messaging plan with a carrier that supports RCS. Availability varies by carrier and region, so the requirements do not guarantee that RCS is available with every provider or in every location. Activation may take a few hours. For setup information, see Apple’s Messages setup guide.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to check when a message turns green
- Check the recipient: Messages to someone without an Apple device use a carrier service rather than iMessage.
- Check iMessage settings on both sides: If either device has iMessage turned off, the message may be green.
- Consider a temporary outage: iMessage may be unavailable at the time you send the message.
- Review setup after a device change: If you recently set up a new device, check that Messages is configured correctly.
- Check RCS support if relevant: RCS requires iOS 18 and support from the carrier; local availability and activation can vary.
These checks identify why a message may not use iMessage; the green color by itself cannot tell you whether it used RCS, SMS, or MMS.
Quick Recap
Best Value
- 6.1" Super Retina XDR OLED, HDR10, 800 nits (HBM), 1200 nits (peak), 2532x1170px at 460ppi, 4005mAh Battery
- 8GB RAM, Apple A18 6-core CPU (2 performance + 4 efficiency cores), Apple GPU 4-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide, Front Camera: 12MP, f/1.9, wide, iOS 18.3.1, upgradable to iOS 18.5
- Connectivity: Global 4G LTE, Sub-6 GHz 5G, LTE, Wi-Fi 6, Bluetooth 5.3, NFC, USB-C, Wireless Charging (7.5W). (does not have mmWave 5G or MagSafe or physical SIM card) - Dual eSIM Only
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Straight Talk., Etc.
Rank #4
- This pre-owned product is not Apple certified, but has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.
- There will be no visible cosmetic imperfections when held at an arm’s length.
- This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied.
- Product may come in generic Box.
Rank #3
- 6.1inch Super Retina XDR display. Aluminum with color-infused glass back. Ring/Silent switch
- Dynamic Island. A magical way to interact with iPhone. A16 Bionic chip with 5-core GPU
- Advanced dual-camera system. 48MP Main | Ultra Wide. Super-high-resolution photos (24MP and 48MP). Next-generation portraits with Focus and Depth Control. 4X optical zoom range
- Emergency SOS via satellite. Crash Detection. Roadside Assistance via satellite
- Up to 26 hours video playback. USB C, Supports USB 2. Face ID
Rank #2
- 6.1" Super Retina XDR OLED, HDR10, Dolby Vision, 1000nits (typ), 2000nits (HBM), 2556x1179px at 460ppi, 3561mAh Battery
- 128GB 8GB RAM, Apple A18 (3nm), Hexa-core (2x4.04 GHz + 4x2.20 GHz), Apple GPU 5-core, 16‑core Neural Engine
- Rear camera: 48MP, f/1.6, wide + 12MP, f/2.2, ultrawide, Front Camera: 12MP, f/1.9, wide, iOS 18, upgradable to iOS 18.5
- 4G LTE: 1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/30/32/34/38/39/40/41/42/48/53/66/71, 5G: n1/2/3/5/7/8/12/14/20/25/26/28/29/30/38/40/41/48/53/66/70/71/75/76/77/78/79 - Dual eSIM
- Unlocked for freedom to choose your carrier. Compatible with both GSM & CDMA networks. The phone is unlocked to work with all GSM Carriers & CDMA Carriers Including AT&T, T-Mobile, Verizon, Sprint., Etc.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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