Test and Test and Test Some More

With the device landscape the way it is, the only way to be sure that the sites you build work across multiple devices is to test. Test at the start of the project, test at the end, and test at every opportunity all the way through. If you’re planning a multi-device project, factor in testing to take up to 40 to 50 percent of build time. Seriously.

You can’t find a substitute for testing on actual devices, so start building a library of as many devices as you can. If you work near other agencies, consider pooling resources so you can get a broader range. In many cities, open device labs are being assembled, with a range of devices donated by local developers and companies that are available for anyone to use. ...

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