When it comes to designing for mobile devices, nothing beats seeing your work on the device you made it for. But before any code is deployed, your best bet is to rely on the highest quality mockups you can find — They’ll let you take advantage of any given product, both its strengths and its weaknesses.

Designing within your constraints saves tons of time in the longrun, and clients (along with nearly everyone else) will certainly prefer a fully-polished look. Most importantly, as mobile devices like smartphones and tablets continue to grow in popularity, everyone from UI designers to web developers should be keeping these new screens in mind.

Here’s 13 Photoshop PSDs and Vectors for iOS, Android, and Nokia devices. Pick your favorite and put them to work!

iPhone

iphone4 13 iPhone, Android and Nokia PSDs for killer mobile mockups This beautiful set by Arnas Goldbergas features iPhone4/4S mockups, along with a Macbook Air and an iMac. From what I can see, this set of vectors is nearly perfect.

iPhone2 13 iPhone, Android and Nokia PSDs for killer mobile mockups
Here’s a second set that includes the iPhone in white.

vector goodness 13 iPhone, Android and Nokia PSDs for killer mobile mockups
While you’re at it, here’s a GUI kit by Mercury Media.

iPad

apple ipad 2   psd   png   ico by davinci1993 d3aiovh 520x416 13 iPhone, Android and Nokia PSDs for killer mobile mockups
This iPad 2 mockup comes in both colors, with PSD, PNG and ICO versions. Here’s a second mockup in black as a backup.

ipad gui 13 iPhone, Android and Nokia PSDs for killer mobile mockups
An iPad GUI Kit in PSD by Raw Apps.

iPod Touch

ipod touch 4th gen psd by kampongboy92 d2y03eh 520x318 13 iPhone, Android and Nokia PSDs for killer mobile mockups
Snag this iPod Touch 4th Generation PSD, created by kampongboy92. Particularly useful if you’re releasing on all iOS devices.

Android

samsung galaxy nexus  psd by slaveoffear d4f72dg1 520x369 13 iPhone, Android and Nokia PSDs for killer mobile mockups

The Galaxy Nexus is one of the most talked about Android devices at the moment.

Screen Shot 2011 12 14 at 6.13.41 PM 520x336 13 iPhone, Android and Nokia PSDs for killer mobile mockups

The HTC Sensation 4G is another popular phone to design for. This mockup isn’t perfect, but is usable.

android 2.3 520x371 13 iPhone, Android and Nokia PSDs for killer mobile mockupsHere’s a comprehensive set of Android GUI elements.

Unfortunately, Android-based devices come out much more often than Apple, since the Android OS is spread across multiple manufacturers. We’re on the lookout for other recent phones, as well as Android 4.0 mockups. Send us what you’ve found via the comments!

Windows Phone 7

Screen Shot 2011 12 14 at 5.39.37 PM 520x274 13 iPhone, Android and Nokia PSDs for killer mobile mockups
Nokia’s brand new Lumia 800 is quite gorgeous. Take a peak at the line if you’re not familiar.

Screen Shot 2011 12 14 at 5.36.07 PM 520x265 13 iPhone, Android and Nokia PSDs for killer mobile mockups
HTC’s Titan is another WP to look out for.

Windowsphone7 520x367 13 iPhone, Android and Nokia PSDs for killer mobile mockups
Lastly, here’s a generic option for WP7.

Do you have any favorite mockups that you rely on? Have you ever had to make your own? Please share them below and we’ll add more to the list!