Why it happens: iOS 12.5.7 has older networking certificates. The App Store may struggle to validate modern tokens. Fix:
This error usually appears because you are trying to install a newer version from a backup. Solution:
Your iPhone 5s or 6 is running a decade-old chip (A7 or A8). Facebook is a heavy app. Here is how to keep it usable:
Follow these instructions carefully. Do not delete the Facebook app if you already have it, as you may not be able to reinstall it if something goes wrong.
Last Updated: 2026
If you are still holding onto a classic Apple device—such as the iPhone 5s, iPhone 6, iPhone 6 Plus, or early iPad mini and iPod Touch models—you are likely running iOS 12.5.7. This version, released by Apple as a critical security update in early 2023, is the final supported operating system for these older devices.
While many modern apps require iOS 13 or later, you can still successfully download and install Facebook on your legacy device. However, the process is not as straightforward as tapping "Get" on a newer phone. This guide will walk you through everything you need to know about downloading Facebook for iOS 12.5.7, troubleshooting compatibility errors, and managing performance.
For users without a second iOS device:
If you cannot get the download to work, or the app becomes too slow, consider these options for iOS 12.5.7:
| Alternative | How it works on iOS 12.5.7 | Verdict |
| :--- | :--- | :--- |
| Facebook via Safari | Navigate to m.facebook.com (mobile site). Works surprisingly fast. | Best Option |
| Friendly Social | A third-party browser wrapper for Facebook. Still supports iOS 11+. Available on the App Store. | Recommended for ad-free use. |
| Facebook Lite (APK) | Not available. Facebook Lite is Android-only. | N/A |
How to create a Facebook Home Screen shortcut (like an app):
Why it happens: iOS 12.5.7 has older networking certificates. The App Store may struggle to validate modern tokens. Fix:
This error usually appears because you are trying to install a newer version from a backup. Solution:
Your iPhone 5s or 6 is running a decade-old chip (A7 or A8). Facebook is a heavy app. Here is how to keep it usable:
Follow these instructions carefully. Do not delete the Facebook app if you already have it, as you may not be able to reinstall it if something goes wrong.
Last Updated: 2026
If you are still holding onto a classic Apple device—such as the iPhone 5s, iPhone 6, iPhone 6 Plus, or early iPad mini and iPod Touch models—you are likely running iOS 12.5.7. This version, released by Apple as a critical security update in early 2023, is the final supported operating system for these older devices.
While many modern apps require iOS 13 or later, you can still successfully download and install Facebook on your legacy device. However, the process is not as straightforward as tapping "Get" on a newer phone. This guide will walk you through everything you need to know about downloading Facebook for iOS 12.5.7, troubleshooting compatibility errors, and managing performance.
For users without a second iOS device:
If you cannot get the download to work, or the app becomes too slow, consider these options for iOS 12.5.7:
| Alternative | How it works on iOS 12.5.7 | Verdict |
| :--- | :--- | :--- |
| Facebook via Safari | Navigate to m.facebook.com (mobile site). Works surprisingly fast. | Best Option |
| Friendly Social | A third-party browser wrapper for Facebook. Still supports iOS 11+. Available on the App Store. | Recommended for ad-free use. |
| Facebook Lite (APK) | Not available. Facebook Lite is Android-only. | N/A |
How to create a Facebook Home Screen shortcut (like an app):
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