Here's the ZL vs your z10
The same size phones, but my ZL packs in a 5" screen compared to your little 4.2".
It's also full HD 1920x1080 compared to your 1280x768.
The pixel density is 441ppi compared to your 356
Mine has DLNA, yours doesnt, meaning you can't stream some ladyboy cock thrusting up you, from your phone to TV
Mine has a 13mp camera compared to your 8mp and will pick out the blue vein in Emmas pork sword. Also note the dedicated camera button
More battery power 2,370 mah compared to your 1,800mah
Faster CPU clock speed 4x1.5ghz compared to your 2x1.5ghz
There's also a million more apps
I could go on and on, but no doubt, unless your hung like Ron Jeremy, I do have a bigger fatter cock than you also.
Your blackberry does have a removeable battery though
How much did you pay for the Blackberry Socal ?