You can try this SaleHoo-recommended supplier:Link hidden: Login to view
Here are a couple of well established companies that specialize in buying and selling used and refurbished cellular phones:Link hidden: Login to viewLink hidden: Login to view
You may also check out this wholesale trading board of used phones, Link hidden: Login to view
For tips when buying from Cellpex.com, have a look at this forum post: Link hidden: Login to view
Note that we cannot guarantee the safety of suppliers outside of SaleHoo but we have checked the above suppliers and found that they are well established having been online for years and have good reputation.
We advise that you only use safe methods when paying (e.g. PayPal or credit cards) and check out our Learning Center Link hidden: Login to view
for more tips on pre-qualifying suppliers and avoiding scams.
Hope that helps! Good luck :)