Step-1: First Open your opera browser.
step-2: In opera address bar type opera:config then press ok.
Step-3: Now you show different section. All section fill up according to following tips...
<>large placeholders for images=NO
<>Fit text to screen=Yes
<>Loading timeout=reduce to 10/20 seconds as the case maybe.
<>Site patches and user-agent masking=NO
<>Keep styling in RSS feeds=NO
<>Show feed index=NO
<>Phone number detection=Yes/No(your choice)
<>Minimum phone number length=no need to edit.
<>Use bitmap font=No
Done, Now save it and enjoy more speed with opera mini.