Can You Add Memory to an iPhone?
As of the date of publication, you cannot add memory to the iPhone 4, the current model of the popular smartphone, which is available in versions that feature 16GB or 32GB hard drives and 512MB of RAM. Smartphones currently on the market can only support up to 32GB of expanded memory.
When it comes to smartphones, such as the iPhone 4, RAM provides the device with the room to read and write data using the unit's central processing unit without needing to access the hard drive. Simply put, the higher the amount of RAM, the less the CPU needs to read data from the hard drive. Using RAM instead of the hard drive provides you with faster computer processing speeds. Data stored in RAM remains there for as long as the phone is running. All data stored in RAM disappears once the device is turned off.
Memory and Data Storage Tips
If the iPhone 4 has been running for a long time, shutting it down periodically will provide you with more RAM and faster computing speeds once you turn it back on. Occasionally checking the phone for unwanted and unused content and deleting them will help free up room on the phone's hard drive. This will give you more room to add content, such as applications, photos, videos and music. Sending stored videos and photos to an email address and then deleting them will also help free up data space and help the phone's memory.
With such a large amount of data storage and memory available, the iPhone 4 supports a virtually unlimited amount of contacts with multiple phone numbers, photos and ringtone IDs in its phone book application. Photos and ringtone IDs allow you to assign stock or custom photos and ringtones to each contact, which appear and sound when that person calls you. Using these features extensively will consume a large amount of data storage, as well.
You may experience slower processing times as the iPhone 4's available hard drive space or memory decreases, even with 512MB of RAM. Using the phone for its video-streaming capability will also contribute to slower processing speeds. Large files, such as high-resolution video, take up RAM space and may cause sluggish performance and sudden closures of applications. In addition to its high-capacity hard drive and RAM, the iPhone 4 is equipped with a 1GHz ARM Cortex-A8 processor, a PowerVR SGX535 graphics processing unit and an Apple A4 chip, which provide ample data processing power.