Selling, recycling or donating your old Android smartphone?

Simple deletion or factory reset is not enough. Some personal information may stay in your smartphone's memory after you delete it, information that is still vulnerable to some specialty recovery tool.
# Erase all existed data(apps, music, videos, photos, private data, system settings, etc.) on the smartphone
# Deeply search and erase deleted data that still stays in your smartphone's memory
# Works with All Android smartphones from Samsung, LG, HTC, Motorola, Sony, Nokia, etc