Location: San Ramon, CA

Circuitcastle Technologies aims to provide you with a one-stop shop for pre-owned or new, high-end smartphones at a great price for yourself or your loved ones!
All Smartphones sold by us are checked for full functionality. Carrier Service/data plan needed for voice call and/or mobile data are not included with the product. The buyer has to purchase them at his/her own risk/responsibility.
Each and every phone is inspected for IMEI/ESN and listed only when the IMEI/ESN is found clean. We do not sell any smartphones with bad or blacklisted IMEI/ESN.
All pre-owned smartphones are inspected and graded according to their cosmetic condition to meet Swappa's requirements for Mint, Good and Fair category. All phones sold by us are fully functional. There are no hidden labels or comments for any functional defects. So you can shop worry free from us!
The Phones sold on this website are guaranteed not to be under any contract and the phones listed as GSM Unlocked will work with majority of the GSM carriers worldwide. The phones sold by us does not come with any warranty including but not limited to water proof feature advertised by manufacturer.
Your satisfaction is our priority. We provide hassle-free returns within 15 days of receiving the product if the buyer is dissatisfied with the purchase. The device has to be packed and shipped back in its original packaging and in the exact same condition as received in order to be eligible for return. Please check our return policy for more details on Returns.
All smartphones come with Free Shipping and Free Returns within United States unless otherwise specified. We do not sell or ship internationally.

Popular Listings


Only 2 left


Apple iPhone 7 (Verizon) [A1660]

256 GB

iphone 7 256GB Gold Mint Verizon/GSM Unlocked phone || 15 Days Free Returns


Only 1 left


Google Pixel 3 (Verizon)

64 GB

Google Pixel 3 64GB Black Verizon/GSM Unlocked phone with Charger || 15 Days Free Returns


Only 1 left


LG G6 (Sprint) [LS993]

32 GB

LG G6 32GB Black 7/10 Sprint phone || 15 Days Free Returns

Latest Ratings
  • Rating Summary  1476   33   0
  • +1 rating by Giovanny B. on Jan 25, 2020:

    Great and hassle free

  • +1 rating by Ryan M. on Jan 25, 2020:

    Item arrived very fast and as expected.

  • +1 rating by Thai C. on Jan 24, 2020:

    I highly recommend this seller

  • +1 rating by Lyndsey M. on Jan 24, 2020:

    Loving my new phone!

  • +1 rating by Gregg L. on Jan 21, 2020:

    my phone arrived just as advertised

Shipping Policies

The device ships free of cost by USPS First Class Mail. There are no additional handling fees. Shipping can be upgraded to USPS Priority mail( 2 to 3 business days to reach) for an extra charge of $5 by requesting us on sale page once the device is purchased.

Return & Refund Policies

Hassle Free Returns accepted within 15 days if the buyer finds some functional issue with the device or is dissatisfied with the purchase for any reason. We pay return shipping cost. Device needs to be returned in exact same condition as received and has to be free from passwords/ Google account locks/ Apple ID locks in order to be eligible for return. If the device is returned in broken/damaged or non functional condition including but not limited to water damage it will not be eligible for returns.

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