Desire for different OS:

The desire to use different operating systems for mobile devices prompt some phone users to change their phone even when it is not faulty. A user who has two android phones can decide to get rid of one to acquire a new phone with different operating systems. IOS, Linux, Windows and Android release different software versions subsequently to satisfy the ever increasing demand of users. Some users prefer to have different phones with diverse operating systems. Some applications like Microsoft word is only available on a windows phone. An IOS phone owners can buy a new windows phone just to enjoy the exclusive apps available at windows app store. Having a feel of different operating systems on different mobile devices can really be fun.

Broken Screen:

When a phone falls down hard. It's either it has a cracked screen or broken screen. When the screen gets broken, the touch screen sensor goes bad. It can fail occasionally or fail permanently. A bad phone screen can be replaced. However phone users believe the phone may never remain the same even after a screen change and choose to buy a new phone. Getting a original phone screen may sometimes cost as much as one third of the phone's price. This discourages some and they decide to add some amount and just get a new phone.

Better RAM:

Some phones with random access memory as low as 512mb malfunctions when there are two many processes running on the phone. When there are too many applications running it makes the phone get hot or start hanging. Some game applications and other heavy apps cannot run with a low RAM. This means a phone owner with low memory won't even bother installing some apps because they won't work. The large the RAM, the faster the phone especially when it has a fast processor attached to it. Low memory notification sometimes pop up on a phone when the memory is low. When this happens some programs that work normally will refuse to run. These issues is a wake up call that such phone users should get a new phone with a larger memory like 1gb, 1.5gb, 2gb or more.  

Bigger Memory:

The need for a bigger phone memory compel some users to change phones frequently. Some phones come with 8gb ROM or memory space with extra memory card slot that maybe up to 32gb. Phones with camera Mega Pixel that is above 5mp will quickly run out of memory if the owner is a selfie lover. Some High definition pictures can take as much space as 1.5mb or more. Although media contents as picture, songs and movies can be diverted to an external memory space, it doesn't apply to phone applications. Apps would rather stay and the internal phone memory and updates as well. This can make phone that are even up to 16gb run out of space quickly if the user loves many apps installed. This will compel such user to buy a new phone with bigger space soon afterwards.

Virus attack:

Some phones go crazy when infested by a virus. This can happen if the phone has a weak anti-virus software, an outdated anti-virus software or no anti-virus software at all. The phones system files get corrupted. Sometimes it is duplicated and replaced with a fake one. This makes the phone malfunction. When viruses find their way into a phone, important files and documents can be exposed and accessed by strangers on the internet. The phone may restart frequently on its own or open different application without the owners knowledge. Flashing such phone can repair the errors but some users may just consider this issue a right opportunity to change the phone.  

Bigger Screen Size: 

Some screen sizes of 4.7inches and below are considered small for some phone users. They may like big screen for use of multi-media content like playing movies or because of eye problems. Someone who is short sighted will problems reading small letters in small phone screens, hence they'll prefer to buy a bigger screen phone with bold characters which will be easy to read.

Expired Phone:

You may actually wonder if phones expire. Yes they do. Every phone has its expiry date and would malfunction if it is still being used after expiry. There are different ways of checking phone expiry date. It is advised to get new phones before they expire. Some people get new phones when it's expired because they have no choice since the phone is no longer usable.

Software Error: 

Some phones have software errors for certain reasons. This forces the phone to malfunction. Some phone user find it difficult to read phone user manuals which gives specific instruction of how to use the phone. One of the best ways to prolong the lifespan of a phone is the hear the manufacturers' rules. This happens when you read the user manual. It says what to do and what not to do in order to enjoy the phone. Some people forcefully pull out chargers from mobile phones while charging. This can destroy the charging port. Some people also update some phone software when the battery is almost dead this can totally destroy the phone. Instructions that help to minimize such are written on the phone manual. This comes with the phone as hard copy and can be downloaded as soft copy.

Worn out Hardware:

Some phones look very unattractive and worn out after long years of use. Users with such phone definitely know it's time to get a new phone. They buy new one to replace the old once funds are available.

Larger Camera Pixel:

One of the special focus of mobile device manufacturer is camera and picture quality. The Camera is being enhanced to make the phone as smart as possible and get high quality pictures. Some phone come with Camera with 22mp and more. These can capture long distance images and still remain very clear. In this age of selfie obsession, users tend to keep themselves up to date with phones have high quality camera to keep the memories of their activities in their archives.

Faster Browsing Speed:

Some phones come with 4G and higher connection technology for better internet use experience. Phone users with 3G and lower will not be able to enjoy some apps and also get frustrated by slow internet connection speed. This is one reason some users upgrade their phones to one with higher internet speed technology.

Software Upgrade:

Software on mobile phones come with integration of legacy systems that allow users to upgrade to a higher software when the phone connects to a wireless network and the new software version is available for download. This may not happen again if the hardware is not strong enough to accommodate the software upgrade. The processor and memory on the phone may be to weak. Some phones even get jammed and refuse to start if such upgrade is attempted. The need for a newer software will compel some users to get a new phone.

Organizational benefits:

Some organizations treat their staffs specially. They consider them representatives of the company brand hence they don't want them using things that are outdated or look as if the company is treating them badly. Such company have a calender for changing the phones of their staffs to keep them up to date with latest phones. Information Technology company staffs use high profile phones to do their jobs. Some IT companies get new phones for their staffs to keep them upto date with latest technologies to do their work.