Language is in spanish

Go into your applications folder. Open your "System Preferences" - then look at the top for a flag icon that say's "Language and Text" - this will take you to a window that gives you many options for using different languages. Hope this helps.

You need to use the remote to go to the setup menu and set the language to English, or if you are in the USA set it to US English, which is different from English.

You do the below seteps: This is what you do:

Start > Control Panel > Clock, Language, and Region > Regional and Language Options.

Once in the Regional and Language Options, click the Keyboards and Languages tab. If you see a drop down list of languages, see if it is set to English. If not, set to English. However, if you do not have this list there, you may need to install it.

The problem is not from the battery you changed. It should be from the sim card you changed. The phone's language is set to automatic, therefore it reads sim card languages automatically. To rectify this, since you do not understand spanish:
Option 1
-Put back the english sim then go to settings, and set your default language to English only

Option 2
-Send me your phone name and model so I can give you a reset code
THANKS. HOPE THIS HELPED.

Go to Control Panel click on the Regional and Language Options Icon and change the current format to English..... My understanding of the words in Spanish to do this is not much different than the English, so it should not be to hard to change.

just go to teh site mobile heart.com and download the software for any language

That's funny. Guess you need to brush up on your Spanish!
Here's how to fix assuming you have a 260 or 260w:
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} This may be a result of a previous software version on a device or possibly some one changing the settings. If a device does power on with a foreign language that you can not understand it can be corrected by going through the settings to change the text language.
To change the text language:

1. Touch Wrench icon on the screen with the Magnifying Glass and Map icon
2. Touch the Gears icon
3. Touch the down arrow
4. Touch the second option from the top1
5. Touch the middle blue box on right
6. Touch the up arrow until American English appears2
7. Touch American English
8. Touch OK
9. Touch Back

The device should be in selected text language.
Note 1 - In some cases, if there are Custom POIs loaded to the device then it may be the first option at the top.
Note 2 - If American English is not the language needed, please selected the desired language

at the bottom of the screen, In spanish it will say "indioma" or " lengua", press that and it should change the language if chosen to english

I have a CX6400 and I don't know if this helps but it's worth a try:
Press the setup button and the screen starts with #1 option. by pressing the top lit green button to the left of the screen, it will go through the remaining options with LANGUAGE as option #7 saying to press the color button. Press the color button, and the bottom right portion of the screen shows the language options, starting with English. By pressing the lower lit green button to the right of the screen it goes through the languages that you have to choose from. When you see the language you want displayed on the screen then you press a button under the screen that says OK. Hope this helps!

Oh boy that's a real problem. I guess the menu is there but you don't understand it because it's in Spanish.

I don't know this particular phone but thinking logically, there are four things I would consider.

1) Find someone who can speak Spanish, there are lot of people who can.
2) Find someone who has the same phone that is in English and copy the key presses.
3) Use Google language tools to help you interpret the Spanish menu
4) Take you phone to a dealer

Hope this helps....