Might not be a perfect solution but you can use edgengram filter and copy all
your field data to that field and use it for suggestion.
<fieldType name="text_autocomplete" class="solr.TextField"
positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.EdgeNGramFilterFactory" minGramSize="1"
maxGramSize="250" />
</analyzer>
<analyzer type="query">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
http://localhost:8983/solr/core1/select?q=name:iphone
The above query will return
iphone
iphone5c
iphone4g
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