diff --git a/xpt2046.py b/xpt2046.py
index 4f9a1d5..78fbd09 100644
--- a/xpt2046.py
+++ b/xpt2046.py
@@ -18,7 +18,7 @@ class Touch(object):
 
     def __init__(self, spi, cs, int_pin=None, int_handler=None,
                  width=240, height=320,
-                 x_min=100, x_max=1962, y_min=100, y_max=1900):
+                 x_min=100, x_max=3924, y_min=100, y_max=3800):
         """Initialize touch screen controller.
 
         Args:
@@ -133,4 +133,4 @@ def send_command(self, command):
         self.spi.write_readinto(self.tx_buf, self.rx_buf)
         self.cs(1)
 
-        return (self.rx_buf[1] << 4) | (self.rx_buf[2] >> 4)
+        return (self.rx_buf[1] << 5) | (self.rx_buf[2] >> 3)