If you use WeChat a lot, the thing you mostly want back when you iPhone crashes or get damaged accidentally must be the WeChat messages. However, the WeChat app developed by Tecent does not provide service of cloud storage any more, meaning there is no chance to recover the WeChat messages through downloading from cloud storage.
Now that your iPhone has crashed and damaged and becomes inaccessible. To retrieve WeChat messages, you can only turn to iTunes for help. If you have ever synced your iPhone to iTunes manually or enabled automatic backup, there should be an iTunes backup file on your computer. The backup file, however, does not mean anything as your iPhone has been inaccessible for the time being, as neither iTunes or iCloud backup file is readable file.
Fortunately, there is a third party iPhone data recovery program iFonebox which makes it possible to recover the WeChat messages selectively from iTunes backup instead of restoring the entire iTunes backup file to iPhone. With this professional iPhone data recovery software, you are sure to successfully restore the WeChat messages to computer without causing any other data loss.