If you need a replacement screen for your Samsung Galaxy A02s, you have a few options:

1. **Official Samsung Service Center:** The safest and most reliable option is to contact an official Samsung service center. They will use genuine Samsung parts and ensure proper installation. You can locate the nearest service center by visiting the Samsung website or contacting Samsung customer support.

2. **Authorized Repair Centers:** If you can't find an official Samsung service center nearby, consider going to an authorized repair center. These centers are certified by Samsung to perform repairs and may use genuine Samsung parts.

3. **Online Retailers:** You can find replacement screens for Samsung Galaxy A02s on various online marketplaces like Amazon, eBay, and AliExpress. Make sure to read reviews and check the seller's replacement screen for samsung a02s reputation before purchasing, and ensure that the replacement screen is compatible with your specific model.

4. **Local Electronics Repair Shops:** Some local electronics repair shops may offer replacement screens and repair services for Samsung devices. Be sure to inquire about their experience and the quality of the replacement screens they use.

When purchasing a replacement screen, be sure to check the compatibility with your specific Samsung Galaxy A02s model (e.g., SM-A025F/DS, SM-A025M/DS). Additionally, consider whether you want to attempt the replacement yourself (if you have the necessary skills) or have it done by a professional technician to avoid any potential issues during the installation process.