Do you need to sell your smartphone to buy a new one? Well, you’re probably wondering what to do before selling a smartphone, in this article we will explain the operations to be performed that include backup, deletion of data and further protection of sensitive data making them unrecoverable.

So, the first thing to do is to save important data such as text messages, contacts in the phone book, reminders on the calendar, images, music and videos.

In the case of the latter they can be easily exported on a microSD card of the phone, or, through the USB cable, on a computer or even on one of the many online cloud storage services like Google Drive, One Drive and Dropbox, to name some.

However, some data such as text messages are more difficult to export, as well as contacts that could be saved on the SIM, but if these are combined with other information, you could find yourself in a fragmentation of a contact in multiple contacts.

For these reasons the best thing to do is a data backup, a fairly simple procedure that varies depending on the type of operating system you have on your smartphone.

1. Make a backup of the data

When you make a backup you want to secure the data that are on the device by saving them elsewhere, it is an operation that can be done directly from the smartphone or using some apps specially dedicated to this operation.


To make a quick backup with an Android smartphone just take advantage of the standard options of the device, which allow you to synchronize data with your Google account.

This is a very simple procedure: go to Settings> Backup and Restore.

Reading the instructions on the screen you will find that data, wifi passwords, preferences and apps will be automatically saved online and will be available again from your Google account.

To make a backup of contacts and SMS you can use or the management applications of your device, or, some specific applications for these two operations.

In addition, by connecting the smartphone with a USB cable directly to the PC it will be possible to save all the folders.


To backup with the iPhone there are two possibilities, the first is to take advantage of iCloud and the second is to do it with the iTunes program.

To backup with iCloud you need to connect the device to a wifi network, go to Settings> [your name] and to iCloud> iCloud Backup. If you are using iOS 10.2 or earlier, verify that the iCloud backup option is enabled. Finally, tap on Run Backup now.

If you want to back up with iTunes, connect the device to your computer, give permission if you follow the instructions on the screen, then choose your iPhone.

In case you want to save health data and activity of the iOS device, you need to do the backup encoding, then choose the Backup encoding [device] box and create a password → if you do not need the encoding simply click on Back up now.

To verify the success of the backup and make sure it has been completed correctly, check the iTunes summary screen that will show the date and time of the last backup.

Remove the microSD

Smartphones offer the possibility to expand the memory on which to store files thanks to microSD, before selling a smartphone is good to remember to remove it.

If instead you want to sell the device with the whole microSD, you have to make sure to format it at least 3 times before selling it in order to strengthen the privacy, even if it is usually not recommended to sell it.

Factory data reset

After having performed all the previous operations, it goes to the factory data reset, also called “formatting” that allows you to delete all the data on your smartphone and bring it back to the initial situation.


To start the factory data reset on Android go to Settings App in Settings, then System and Restore. If so, enter the pin, password or pattern.

Tap on Factory data reset and then on Reset phone, choose Delete all to delete all the data in the internal memory of the device and then start the procedure which may take a few minutes.


To remove all personal data and restore the factory data on the iPhone, you must first exit iCloud, iTunes Store and App Store, turning off all access to various accounts.

Then go to Settings> General> Reset> Reset content and settings.

If the Find My iPhone function is activated, you may be asked for the Apple ID and password, enter all the required information and click on Reset [device].

If you switch to a new non-Apple smartphone, also cancel iMessage registration; in any case, to get all the information necessary to perform all that is necessary to raise the level of privacy, contact an operator.

Make data irrecoverable

The only reset of the smartphone does not ensure the permanent elimination of the data previously saved in memory, which works similarly to that of a computer hard drive.

When we delete data from a hard disk they are usually not deleted permanently but only moved to a sector of the disk that can be overwritten, similarly the same thing happens on the smartphone.

So it is important to be careful before selling a smartphone and take action so that the data is truly unrecoverable.

For Android you can use the iShredder application, it is a very effective free solution that erases and overwrites the memory of the device using military-level security algorithms, which means that it will be impossible to access the information on the device before the formatting.

In the free version there are 5 methods of data deletion, these are five algorithms recognized at the military level, therefore of certain effectiveness, if you have time the advice is to launch them all, otherwise, use the last two methods proposed by the program that they rely on three cycles of overwriting each.

Only after having performed all the steps described in this article you can finally sell your smartphone in total security.


  1. I must say, I think your really on point with this, I can’t say I am completely on the same page, but its not big of a deal .

  2. Well-written article. I was checking continuously to this website and Im really inspired! Very educational information, especially the fifth sentences. I really want this kind of info. I was looking for this particular knowledge for a very long. Thankx and best of luck.

  3. I have had my brand new Apple iphone Four for less than a couple of days now and i should point out that for any individual thinking of getting an phone, just purchase the 3gs. Not only will you save a lot of money but you will probably save yourself a great deal of headaches.

  4. I completely agree with the above comment, the internet is with a doubt growing into the a excellent number of important medium of communication across the globe and its due to sites like this that ideas are spreading so quickly. My best wishes, Alda.

  5. I would like to voice my gratitude for your kindness in support of people that should have assistance with this important area. Your personal dedication to getting the solution along became exceedingly productive and have truly empowered women like me to get to their pursuits. Your important useful information indicates this much a person like me and far more to my office colleagues. Regards; from everyone of us.

  6. Surprisingly! Its like you understand my mind! You seem to know a lot about this, just like you wrote the book in it or something. I think that you can do with some pictures to drive the message home a bit, but other than that, this is good blog post. A good read. I will certainly be back.

  7. Well, that is my very first visit on your weblog! Were a group of volunteers and beginning a model new initiative in a group inside the same niche. Your weblog supplied us helpful data to work on. You might have carried out a marvellous job! Anyway, in my language, there are not much good supply like this.

  8. Youre so right. Im there with you. Your blog is definitely worth a read if anybody comes throughout it. Im lucky I did because now Ive received a whole new view of this. I didnt realise that this issue was so important and so universal. You surely put it in perspective for me.

  9. I have been seeking this information for a while. After two hours of online browsing, luckily I found it in your site. I wonder why Alexa dont display this kind of useful sites in the first few lines. Normally the first few web sites are full of craps. Maybe its time to use other search engine.

  10. I really enjoy this template youve got going on on your site. What is the name of the theme by the way? I was thinking of using this style for the web site I am going to make for my school project.

  11. Wonderful learn, I simply handed this onto a colleague who was doing some research on that. And he truly bought me lunch as a result of I discovered it for him smile So let me rephrase that: Thanks for lunch! Anyway, in my language, there arent much good supply like this.

  12. I keep listening to the reports speak about getting free online grant applications so I have been looking around for the most excellent site to get one. Could you advise me please, where could i find some?

  13. Once I originally commented I clicked the -Notify me when new comments are added- checkbox and now each time a remark is added I get 4 emails with the same comment. Is there any method you possibly can remove me from that service? Thanks!

  14. Hi there! This is kind of off topic but I need some advice from an established blog. Is it tough to set up your own blog? Im not very techincal but I can figure things out pretty quick. Im thinking about setting up my own but Im not sure where to start. Do you have any tips or suggestions? Cheers

  15. You need to get upset! Simply letting the quota happen isnt acceptable. Generally this will allow you to take the inititive to make things happen.

  16. Awsome post and straight to the point. I dont know if this is actually the best place to ask but do you folks have any thoughts on where to employ some professional writers? Thank you 🙂

  17. Wow, that was a great read through. Finally, somebody who really thinks and is familiar with what they are writing about. Quite hard to find these days, especially on the internet. I saved your blog and will make sure to keep coming back here if this is how you always post. Many thanks, keep it up!

  18. Fantastic goods from you, man. I have understand your stuff previous to and you are just too wonderful. I actually like what youve acquired here, certainly like what youre stating and the way in which you say it. You make it enjoyable and you still care for to keep it sensible. I cant wait to read much more from you. This is really a great web site.
    cheap marmot

  19. I will start a blog on the same topic in the near future, this is exactly why Im so interested in your article. Could you mind if I used a few of your ideas for my weblog? Ill obviously mention you as the authentic source and set up a hyperlink pointing back to your blog. Many thanks!
    mont blanc outlet store uk

  20. What i do not realize is actually how youre not really much more well-liked than you might be now. You are so intelligent. You realize thus considerably relating to this subject, made me personally consider it from so many varied angles. Its like men and women arent fascinated unless it’s one thing to do with Lady gaga! Your own stuffs outstanding. Always maintain it up!
    Alexander Wang Outlet

  21. I can’t believe your site would be so mind blowing and epistemlogically significant nevertheless I will alert my other friends , relatives, and significant others thank you very much and never let your self-esteem be lowered because you are a great individual!!
    ecco shoe store


Please enter your comment!
Please enter your name here