On older devices, such as the iPhone 4, where performance takes a hit because of the older hardware trying to keep up with the latest software, it can always be a positive thing to make as much of the operating system as lightweight as possible.
iOS developer Skylerk99 has just released a new free jailbreak tweak called MessageLoad
that makes it so you can manually control how many messages load in the Messages application at once. By default, 100 messages will load, but the tweak will let you override that number and have anywhere from 0-1500 messages load at once.
Whether you're using a really old device and want to reduce the strain on the device's sluggish hardware, or you're running a really new device and want to increase the strain on the device's capable hardware, you can use this tweak to find a happy medium somewhere.
MessageLoad adds a preferences pane to the Settings application where you can configure the number of messages that you want to load:
You can move the slider to anywhere you want it to be between 0 and 1500, or you can put a custom number in the "Override" text field if the slider doesn't do what you want it to. You can also enable or disable the tweak on demand from here. Using the Kill Messages button, you can close the Messages application so that your changes take effect the next time you load up the Messages application.
Don't forget to also check out Skylerk99's NoSafariImages
tweak, which we showed you earlier, as it can also increase performance on slower devices.
If you want to give MessageLoad a try, it's available for free right now in Cydia's BigBoss repository. iOS 7 is required for the installation.
iPhone 5 running iOS 7.1.2