When I give my basic photography CPD sessions about half of the people that attend don't have any form of camera other than the one on their phone. While you can get good results with a phone camera one of the problems is a lack of manual control over the settings. I recommend these phone users get some sort of camera control App to unlock the potential of their phones.
Use of something like the Camera+ App will allow you to make full use of your phone and give you a lot of the functionality of DSLR,
Version 9.1 of the Camera+ App gives you full manual control over,
White balance, including the ability to set the colour temp in K
It also provides useful composition tools like a display grid overlay and horizon level and the latest version allows you to save your files in RAW format to give you the largest scope of adjustment in postproduction.
Use of these manual controls is going to allow you to create much more effective Architectural imagery and provide greater scope for your creativity.