Toptal

A couple of years ago I was working on an app called “BOG mBank – Mobile Banking” with my iOS/Android team. There is a basic feature in the app where you can use the mobile banking functionality to top up your own cell phone postpaid balance or any contact’s cell phone balance.

While developing this module, we noticed that it was much easier to find a particular contact in the Android version of the app than in iOS one. Why? The key reason behind this is T9 search, which is missing from Apple devices.

Let’s explain what T9 is all about, and why it probably didn’t become a part of iOS, and how iOS developers can implement it if necessary.

What is T9?

T9 is a predictive text technology for mobile phones, specifically those that contain a physical 3×4 numeric keypad.

T9 was originally developed by Tegic Communications, and

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