When you upgrade rom, kennel or root devices you will, you will lost your almost important data, settings and applications. So before do this we have to backup all of our data.

To Backup please following all steps of this guide:

You can choose some apps below to backup a part or all of your data and apps: 

SMS Messages – Use “SMS Backup & Restore app”

Contacts Stored in Phone Memory – Sync with the Gmail application

Call Log - Call Log and Restore

Videos, Images, Videos & Files etc.– Copy to internal / External SD Card

This one is free and android’s native backup option provided by Google. this option is only available on android 2.2 or later. You can find it on your phone via going to settings > privacy. When you enable this option it will sync your installed applications, wi-fi settings and wallpapers. There is also an option available “automatic restore”. It backups saved application data, such as game progress or app settings. When you sign in with your Google account on new device, it automatically restore your data. It will apply all your settings and restores all installed applications. But this default feature is not complete solution due to its limitations. If you are running android 2.2 later version with manufacturer with custom shell , it is not possible to backup because manufacturer block permission for Google 

It didn’t backup apps your all applications in attempt to thwart piracy 

It will only back up apps whose developers have specifically enabled that capability

MyBackup Pro , this application is a premium solution .It is available for $4.60 from android market and it is one of the best. It will allow you to back up almost everything, such as your applications (also those that are not supported by Google’s backup ), contacts, SMS/MMS messages, alarms,bookmarks, user dictionary. it can also backup homescreen widgets and shortcuts.

It is very simple to use, when you start this app it will ask you to backup application,other data. It has two option to store backup first is on SD card and second mybackuppro’s secure servers. it also let you schedule backups.

This application is available both free and paid versions ($US6.14). Just unlike mybackup pro it requires root permissions and it can backup restricted application by system as well. In short it can backup absolutely everything. It is not only a backup application but also includes tools useful for rooted devices, such as file encryption, ROM management, application version freezing, and an experimental bloatware exterminator for uninstalling pre-installed softwares.

If you want to restore backup created but titanium backup then it is fine but if you have a new device to restore , then it can be problematic . because rooting method of different devices are different and can take long time to discover.

The guide use this app here

To backup these settings you can go to Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names