At present, there are many reader applications on the market that can be used to read e-books, including the electronic version of BlackBerry. Here are some common reader applications:

1.Kindle reader: Kindle is an e-book reader brand launched by Amazon, which provides cross-platform applications and can read e-books on smartphones, tablets and computers. Search for "Kindle" in the app store to download and install the app.

2.iBooks: iBooks is a reader application developed by Apple, which can read e-books on iOS devices. IBooks has been pre-installed on many Apple devices. If it is not pre-installed, you can search and download it in the App Store.

3. Google Play Books: Google Play Books is an e-book reading platform provided by Google. You can download and install the Google Play book app on Android devices and read e-books on it.

Please note that when downloading and using any application, you need to ensure that you have the appropriate license or copyright to access and read the electronic version of Blackberry. In addition, whether the electronic version of BlackBerry is available depends on whether the publisher and copyright owner of BlackBerry provide the corresponding electronic version.