This is a Samsung Galaxy A21 SC-42A, a SIM-free model sold by docomo, that was used as a dedicated device for "video viewing, searching, and phone calls"! As you can see, the exterior has some minor scratches on the frame, and there is a thin crack on the right side of the 5.8-inch LCD screen (which doesn't significantly affect viewing), but overall it's in good condition, and it's a good product that highlights the GALAXY's characteristic "compact and simple design"! ʕ•̀ω•́ʔ✧ As far as the functionality is concerned, as far as I've checked, the LCD touch, SIM communication calls, various buttons, screen display, good sound quality and volume, Wi-Fi, tethering, etc., are all working fine, and the battery is also very good... it lasts from morning to evening with normal use! (^O^)v The best part is that it's compatible with most carriers, including "docomo," "au," and "SoftBank," as well as "mineo, which offers unlimited low-speed data for 900 yen," "povo, which has a free basic plan and add-ons," "LINEMO, which offers a 900 yen plan with a 6-month refund," and "Rakuten Mobile, which offers unlimited calls and data for 2980 yen" (excluding tax), so you can use it to its full potential! (*•̀.̫•́✧ However, this model doesn't catch these signals just by inserting a SIM card, so for those who are not confident in setting it up, I can set up your preferred carrier's APN after "initialization," update the Google Play Store, and then you can enter your Google account, etc., and it will be ready to use immediately! (^^)d It's a SIM-free device with no remaining balance, equipped with the latest OS "android 11" with "RAM 3GB/ROM 64GB," and this docomo-approved model can still be used on the front lines, I think➰ (^-^) 【Request to Customers!】 We will accept "cancellation requests" due to unavoidable reasons from the customer's perspective, but in that case, the return shipping costs (about 180 yen for Click Post or Smart Letter) will be borne by the customer... Also, customers who use convenience store payments, please let us know the "exact payment date and time"... m(_ _)m