title: Android: how to write NFC-V (ISO15693) tags on Nexus S?
body: <p>I'm trying to write a RFID tag on a Nexus S (Android 2.3.4) using the NFC-V technology. Using <code>transceive()</code> with a write single block command (0x21) invariably leads to a 
  <code>java.io.IOException: transceive failed</code></p>
  
  <p>Both read multiple tags (0x22) and stay quiet (0x02) work flawlessly. I'm sure the tag is writable, since other devices can update it.
  I tried both addressed and un-addressed mode, option flag set/unset, high/low data rate, but had no success.</p>
  
  <p>Has anyone succeded in writing ISO15693 tags on the Nexus S? Any help would be <em>really</em> appreciated.</p>
  
  <p>Thank you!</p>