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 many inconspicuous scratches on the frame, and there is a crack and repair on the lower left side of the 5.8-inch LCD screen (which does not significantly interfere with viewing), but it's a piece that highlights the GALAXY's unique "compact and simple design"❣ ʕ•̀ω•́ʔ✧ As far as functionality is concerned, as far as I have checked, the LCD touch... SIM communication and calls... various buttons... screen display... good sound quality and volume... Wi-Fi (receiving Wi-Fi signals is OK! Tethering is NG) etc. are all working normally without any problems, 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 with add-ons," "LINEMO, which offers a 900 yen refund for 6 months," and "Rakuten Mobile, which offers unlimited calls and data for 2980 yen" (excluding tax)❣ (*•̀.̫•́✧ 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 This SIM-free device with no remaining balance is 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➰ (^-^) 【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 are requested to inform us of the "exact payment date and time"... m(_ _)m