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    <p>Like Seva suggested you can split up your file in chunks. I used this to split up my 4MB file</p> <pre><code>public static void main(String[] args) throws Exception { String base = "tracks"; String ext = ".dat"; int split = 1024 * 1024; byte[] buf = new byte[1024]; int chunkNo = 1; File inFile = new File(base + ext); FileInputStream fis = new FileInputStream(inFile); while (true) { FileOutputStream fos = new FileOutputStream(new File(base + chunkNo + ext)); for (int i = 0; i &lt; split / buf.length; i++) { int read = fis.read(buf); fos.write(buf, 0, read); if (read &lt; buf.length) { fis.close(); fos.close(); return; } } fos.close(); chunkNo++; } } </code></pre> <p>If you do not need to combine the files into a single file on the device again, just use this InputStream, which combines them into one on the fly.</p> <pre><code>import java.io.IOException; import java.io.InputStream; import android.content.res.AssetManager; public class SplitFileInputStream extends InputStream { private String baseName; private String ext; private AssetManager am; private int numberOfChunks; private int currentChunk = 1; private InputStream currentIs = null; public SplitFileInputStream(String baseName, String ext, int numberOfChunks, AssetManager am) throws IOException { this.baseName = baseName; this.am = am; this.numberOfChunks = numberOfChunks; this.ext = ext; currentIs = am.open(baseName + currentChunk + ext, AssetManager.ACCESS_STREAMING); } @Override public int read() throws IOException { int read = currentIs.read(); if (read == -1 &amp;&amp; currentChunk &lt; numberOfChunks) { currentIs.close(); currentIs = am.open(baseName + ++currentChunk + ext, AssetManager.ACCESS_STREAMING); return read(); } return read; } @Override public int available() throws IOException { return currentIs.available(); } @Override public void close() throws IOException { currentIs.close(); } @Override public void mark(int readlimit) { throw new UnsupportedOperationException(); } @Override public boolean markSupported() { return false; } @Override public int read(byte[] b, int offset, int length) throws IOException { int read = currentIs.read(b, offset, length); if (read &lt; length &amp;&amp; currentChunk &lt; numberOfChunks) { currentIs.close(); currentIs = am.open(baseName + ++currentChunk + ext, AssetManager.ACCESS_STREAMING); read += read(b, offset + read, length - read); } return read; } @Override public int read(byte[] b) throws IOException { return read(b, 0, b.length); } @Override public synchronized void reset() throws IOException { if (currentChunk == 1) { currentIs.reset(); } else { currentIs.close(); currentIs = am.open(baseName + currentChunk + ext, AssetManager.ACCESS_STREAMING); currentChunk = 1; } } @Override public long skip(long n) throws IOException { long skipped = currentIs.skip(n); if (skipped &lt; n &amp;&amp; currentChunk &lt; numberOfChunks) { currentIs.close(); currentIs = am.open(baseName + ++currentChunk + ext, AssetManager.ACCESS_STREAMING); skipped += skip(n - skipped); } return skipped; } } </code></pre> <p>Usage:<br> <code>ObjectInputStream ois = new ObjectInputStream(new SplitFileInputStream("mytempfile", ".dat", 4, getAssets()));</code></p>
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    1. POLoad files bigger than 1M from assets folder
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    1. COYour method(s) seems to work but in practice I experienced two issues. At first method (main - java - splitter method) I faces issue when file was exactly 1024 * n (n>0) long. And after last bytes was read `int read` has value `-1` and `fos.write` failed. I changed writing mechanism like `if (read > -1) { fos.write(buf, 0, read); }'. Next issue belongs to `SplitFileInputStream` class. Method `public int read(byte[] b)` does not work well. So I changed it analogically like `public int read(byte[] b, int offset, int length)` method.
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    2. COIt looks something like `public int read(byte[] b) throws IOException { int read = currentIs.read(b); if (read < b.length && currentChunk < numberOfChunks) { currentIs.close(); currentIs = am.open(baseName + ++currentChunk + ext, AssetManager.ACCESS_STREAMING); byte[] buffer = new byte[b.length - read]; read += read(buffer); } return read; }`
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