Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of iOS devices
Table title:
iPhone
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Announced </th><th colspan=1 rowspan=1 > Released </th><th colspan=1 rowspan=1 > Discontinued </th><th colspan=1 rowspan=1 > Unsupported </th><th colspan=1 rowspan=1 > Months supported to date </th></tr>
<tr> <td colspan=1 rowspan=1 > iPhone </td><td colspan=1 rowspan=1 > January 9, 2007 </td><td colspan=1 rowspan=1 > June 29, 2007; 11 years ago </td><td colspan=1 rowspan=1 > July 11, 2008; 10 years ago </td><td colspan=1 rowspan=1 > June 21, 2010; 8 years ago </td><td colspan=1 rowspan=1 > 35 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 3G </td><td colspan=1 rowspan=1 > June 9, 2008 </td><td colspan=1 rowspan=1 > July 11, 2008; 10 years ago </td><td colspan=1 rowspan=1 > June 7, 2010; 8 years ago </td><td colspan=1 rowspan=1 > March 9, 2011; 8 years ago </td><td colspan=1 rowspan=1 > 31 months </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > iPhone 3GS </td><td colspan=1 rowspan=1 > June 8, 2009 </td><td colspan=1 rowspan=1 > June 19, 2009; 9 years ago </td><td colspan=1 rowspan=1 > September 12, 2012; 6 years ago </td><td colspan=1 rowspan=1 > February 21, 2014; 5 years ago </td><td colspan=1 rowspan=1 > 56 months </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > iPhone 4 </td><td colspan=1 rowspan=1 > June 7, 2010 </td><td colspan=1 rowspan=1 > June 24, 2010; 8 years ago </td><td colspan=1 rowspan=1 > September 10, 2013; 5 years ago </td><td colspan=1 rowspan=1 > September 17, 2014; 4 years ago </td><td colspan=1 rowspan=1 > 50 months </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > iPhone 4S </td><td colspan=1 rowspan=1 > October 4, 2011 </td><td colspan=1 rowspan=1 > October 14, 2011; 7 years ago </td><td colspan=1 rowspan=1 > September 9, 2014; 4 years ago </td><td colspan=1 rowspan=1 > September 13, 2016; 2 years ago </td><td colspan=1 rowspan=1 > 58 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 5 </td><td colspan=1 rowspan=1 > September 12, 2012 </td><td colspan=1 rowspan=1 > September 21, 2012; 6 years ago </td><td colspan=1 rowspan=1 > September 10, 2013; 5 years ago </td><td colspan=1 rowspan=1 > September 19, 2017; 19 months ago </td><td colspan=1 rowspan=1 > 59 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 5C </td><td colspan=1 rowspan=1 > September 10, 2013 </td><td colspan=1 rowspan=1 > September 20, 2013; 5 years ago </td><td colspan=1 rowspan=1 > September 9, 2015; 3 years ago </td><td colspan=1 rowspan=1 > September 19, 2017; 19 months ago </td><td colspan=1 rowspan=1 > 47 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 5S </td><td colspan=1 rowspan=1 > September 10, 2013 </td><td colspan=1 rowspan=1 > September 20, 2013; 5 years ago </td><td colspan=1 rowspan=1 > March 21, 2016; 3 years ago </td><td colspan=1 rowspan=1 > Supported </td><td colspan=1 rowspan=1 > 67 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 6 / 6 Plus </td><td colspan=1 rowspan=1 > September 9, 2014 </td><td colspan=1 rowspan=1 > September 19, 2014; 4 years ago </td><td colspan=1 rowspan=1 > September 7, 2016; 2 years ago </td><td colspan=1 rowspan=1 > Supported </td><td colspan=1 rowspan=1 > 55 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 6S / 6S Plus </td><td colspan=1 rowspan=1 > September 9, 2015 </td><td colspan=1 rowspan=1 > September 25, 2015; 3 years ago </td><td colspan=1 rowspan=1 > September 12, 2018; 7 months ago </td><td colspan=1 rowspan=1 > Supported </td><td colspan=1 rowspan=1 > 43 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone SE </td><td colspan=1 rowspan=1 > March 21, 2016 </td><td colspan=1 rowspan=1 > March 31, 2016; 3 years ago </td><td colspan=1 rowspan=1 > September 12, 2018; 7 months ago </td><td colspan=1 rowspan=1 > Supported </td><td colspan=1 rowspan=1 > 36 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 7 / 7 Plus </td><td colspan=1 rowspan=1 > September 7, 2016 </td><td colspan=1 rowspan=1 > September 16, 2016; 2 years ago </td><td colspan=2 rowspan=1 > In production </td><td colspan=1 rowspan=1 > 31 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone 8 / 8 Plus </td><td colspan=1 rowspan=1 > September 12, 2017 </td><td colspan=1 rowspan=1 > September 22, 2017; 19 months ago </td><td colspan=2 rowspan=1 > In production </td><td colspan=1 rowspan=1 > 19 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone X </td><td colspan=1 rowspan=1 > September 12, 2017 </td><td colspan=1 rowspan=1 > November 3, 2017; 17 months ago </td><td colspan=1 rowspan=1 > September 12, 2018; 7 months ago </td><td colspan=1 rowspan=1 > Supported </td><td colspan=1 rowspan=1 > 17 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone XS / XS Max </td><td colspan=1 rowspan=1 > September 12, 2018 </td><td colspan=1 rowspan=1 > September 21, 2018; 7 months ago </td><td colspan=2 rowspan=1 > In production </td><td colspan=1 rowspan=1 > 7 months </td></tr>
<tr> <td colspan=1 rowspan=1 > iPhone XR </td><td colspan=1 rowspan=1 > September 12, 2018 </td><td colspan=1 rowspan=1 > October 26, 2018; 6 months ago </td><td colspan=2 rowspan=1 > In production </td><td colspan=1 rowspan=1 > 6 months </td></tr>
</table>
Question:
Wat were the immediate predecessor and successor of the fourth generation iPhone 4?
Answer:
IPhone 4 is the fourth generation iPhone, succeeding the 3GS and preceding the 4S.