I understand that you are looking to increase the storage capacity of your iPhone from 64GB to 128GB. However, I must clarify that it is not possible to physically upgrade the storage capacity of an iPhone once it has been purchased. The storage capacity is determined by the internal memory chip installed in the device, and this cannot be changed or expanded.
When you buy an iPhone, you are locked into the storage capacity that you choose at the time of purchase. If you require more storage space, you would need to consider purchasing a new iPhone with a higher storage capacity.
I realize this may not be the answer you were hoping for, but it is important to provide accurate information. It is worth mentioning that Apple offers various storage options for their iPhones, ranging from 64GB to 512GB (depending on the model). So, if you find that you frequently run out of storage space, you may want to consider upgrading to a model with a higher capacity when you are due for a phone upgrade.
In the meantime, there are a few steps you can take to optimize the storage on your iPhone:
1. Delete unnecessary files: Regularly go through your device and delete any files, such as photos, videos, or apps, that you no longer need. This can help free up some space.
2. Offload unused apps: iOS has a feature called “Offload Unused Apps” that automatically removes infrequently used apps from your device while keeping their data intact. This can be enabled in the Settings app under “General” > “iPhone Storage”.
3. Optimize photo and video storage: In the Settings app, under “Photos”, you can enable the “Optimize iPhone Storage” option. This will automatically store lower-resolution versions of your photos and videos on your device, while the original high-resolution versions are stored in iCloud. This can help save space on your device.
4. Clear app caches: Some apps accumulate cache data over time, which can take up storage space. You can go to the “Settings” app, select “General” > “iPhone Storage”, and scroll down to see which apps are taking up the most space. From there, you can choose to offload or delete apps that you no longer need.
5. Use cloud storage services: Consider using cloud storage services like iCloud, Google Drive, or Dropbox to store your files and free up space on your device. This way, you can access your files whenever you have an internet connection.
I hope these tips help you optimize the storage on your iPhone and manage your files more efficiently. Remember to regularly back up your important data to a computer or external drive to ensure you don’t lose any valuable information.