I've encountered this problem before & simply ignored it but now I really need to resolve it so I can download non-Android Market apps.
I own a Samsung Captivate (SGH-I897) w/Froyo 2.2 firmware, & the phone is not rooted.
My problem is related to AT&It's ridiculous policy of not allowing non-Android Market apps to be installed on its Android OS-based phones. If anyone could ever give me a plausible & rational explanation of this policy, I'm, all ears. However, I've digressed from my intended inquiry.
For whatever reason,. AT&T allows a slim few Android phones (4 out 100s! To download & install apps from Amazon.com's Appstore. I have no problem downloading the apps, but I still get the dreaded message that informs me "Install blocked -- For security, your phone is set to block installation of applications not obtained from Android Market."
Amazon has an excellent set of instructions on its website, http://www.amazon.com/gp/feature.html?docId=1000626391&ref=sv_mas_4. Finally, I get to my problem!! There are a couple of ways to download apps from the site but I'll stick to the method addressed in the instructions. You're given the option of entering your cell phone into a dialog box, which then sends a text message with a link that automatically downloads the app to your phone. As I noted above, in my case the installation is aborted. Amazon (as well as other providers) provides you with a workaround that is as follows:
- Press "Menu" on the home screen of your phone
- Select "Settings"
- Enter the "Applications" menu
- See if the "Unknown Sources" check box is available
If you have the option to allow unknown sources and third party applications, you should be able to install the Amazon Appstore by visiting: www.amazon.com/apps.
My problem is with the "Unknown Sources" check box..My Captivate simply doesn't have this as an option so I'm unable to proceed any further. Has anyone encountered this problem & found a fix for it? If so, I'd really appreciate hearing about it. Thanks!